Saturday, November 12, 2016

History of the Universe

 

This timeline shows the entire history of the Universe, and where it's headed 

This is how we'll die.
BEC CREW 26 DEC 2015


And just like that, it's December again - a time to reflect on the good, the bad, and the disproportionately long things that 2015 brought. That last one is easy, because by far, the most disproportionately long thing 2015 has given us is this infographic right here, which just keeps going and going and going. Which makes sense, because we're talking about the entire lifespan of the Universe, from the moment of the Big Bang to the 'heat death' of everything we know and love.

Created by Slovak graphic designer Martin Vargic, the Timeline of the Universe covers the past 13.8 billion years of space, and then plots out what's likely to occur in the next 10 billion or so. He's even separated everything out into things that affect space, Earth, life, and humanity, just so you can really easily see what's going to hit us the hardest in our end of days.

We start out with the beginning of everything - the Big Bang, which gave rise to the Universe 13.8 billion years ago. The event birthed the oldest known star in the Universe, Methuselah, located about 190.1 light-years away from Earth. This strange star has caused quite a bit of trouble for astronomers in the past, because estimates had at one point put its age at around 16 billion years - well before the birth of the Universe, which doesn't make sense at all.

It was only in 2013 that scientists were able to reconcile the age of Methuselah with the age of the Universe, using a new method of combining data on its distance, brightness, composition and structure to come up with a significantly younger age for the oldest known star. "Put all of those ingredients together, and you get an age of 14.5 billion years, with a residual uncertainty that makes the star's age compatible with the age of the Universe," lead researcher Howard Bond from Pennsylvania State University said at the time.

As Mike Wall from Space.com explains, while 14.5 billion is still younger than the estimated birth of the Universe, the uncertainty Bond is referring to allows for plus or minus 800 million years, which means their calculations could put the formation of Methuselah at 13.7 billion years old - just after the Big Bang, although only just.

Fast-forward to 10.4 billion years ago, and the Universe achieves habitability for the first time, and life is finally given a chance to emerge. Having said that, we're going to have to wait for the 4.2-billion-years-ago mark to actually see any life on Earth at all, but from there, things start to happen very quickly. (The timeline also includes the more conservative estimate of 3.9 billion years ago for when life on Earth first emerges.)

Want to know when the first natural nuclear reactor formed on Earth, or how far back the brightest star in the night sky appeared? Well, I sure hope you like scrolling, because be prepared to do a lot of it to find out.

And once you get the the bottom of the timeline, enjoy, because you'll be steeped in all the gory details of the predicted death of the Universe, including when Saturn's rings will decay into dust, Earth's orbit goes completely out of whack, and the Sun runs out of hydrogen. Good times.

If you love this timeline, head to Vargic's website to download it as an app for Android and iOS.




America and the world

The piecemaker


For seven decades America has been the guarantor of global order. It may now become a force for instability




WHEN Donald Trump started to assemble his national-security team, he asked his advisers: “Do you know what constant pour is?” At least one of the generals present confessed that he did not. Well, explained Mr Trump, it is the process whereby the concrete foundations of buildings cannot be allowed to set before being filled; cement mixers must be lined up for many blocks at the ready. The lesson was: the generals may know a lot of fancy jargon, but so does he.

It was quintessential Trump: prickly yet boastful. The assertion that the world is complicated is but a con-trick to befuddle honest Americans who wonder why their country seems less feared by enemies and less respected by allies. In his telling, America’s problems are simple, self-inflicted and reversible. It is hard to think of a president-elect less versed in the workings of the world than Mr Trump; or of one more willing to upturn the global order shaped by America in the seven decades since the end of the second world war.


Mr Trump has described his foreign policy in only the vaguest terms, preferring such bumper-sticker slogans as “America First” to detailed plans. To the extent that it can be divined, his programme involves threatening to slap tariffs on imports from China and Mexico; demanding that allies like Japan and the Europeans pay more for their defence; and being nicer to strongmen like Russia’s president, Vladimir Putin. A good president, like a real-estate mogul, must be “prepared to walk” away from a bad deal; and it helps if he is unpredictable. Richard Nixon may have resorted to the madman theory of diplomacy to frighten enemies during the cold war. But Mr Trump’s politics of deliberate uncertainty is terrifying America’s friends and partners: no trade treaty, international institution or alliance is sacrosanct.

America’s allies, though mostly horrified, are scrambling to congratulate him in the hope of limiting the damage he might cause. Other demagogues who denounce elites and the liberal, multilateral, rules-based order are elated. Florian Philippot, an adviser to Marine Le Pen, leader of the xenophobic National Front (FN) in France, exulted on Twitter: “Their world is falling apart. Ours is being built.”

The one area of foreign policy about which Mr Trump’s views are clear and consistent is trade. He has grumbled about it since the 1980s, when he would appear on TV and claim that Japan was robbing America blind (by selling Americans reliable cars at reasonable prices). On the campaign trail, he has redoubled his anti-trade tirades. Whether addressing grey-haired ex-factory hands in Ohio or greeting reporters at his brass-plated skyscraper in Manhattan, he has denounced incompetent and corrupt elites for shipping jobs abroad. China is “killing us”, Mr Trump told The Economist last year. “The money that they took out of the United States is the greatest theft in the history of our country.” (In fact, the money in question was willingly paid for Chinese products.)


Depending on the week, Mr Trump’s remedies have included a promise to declare China a currency manipulator, and threats to slap tariffs of 5%, 10% or even 45% on imports to close America’s trade deficit (see chart 1). He has vowed to tweak the tax code and browbeat the bosses of such giant firms as Ford, Apple and Boeing until they make more of their products at home.


Miffed with NAFTA

Speaking before the election, Mr Trump’s senior trade adviser, Dan DiMicco, the former boss of Nucor, a big steelmaker, set out several actions the president will take in his first 100 days. These include starting to renegotiate trade pacts such as the NAFTA accord with Mexico and Canada (and threatening to pull out if they won’t play ball). Every future trade agreement, among them the Trans-Pacific Partnership (TPP) between America and 11 other Asia-Pacific countries, and the Transatlantic Trade and Investment Partnership (TTIP) with the European Union (EU), will be put on hold. “Whether they go forward depends on whether we can return to balanced trade, and whether they add to GDP growth,” Mr DiMicco said. “The era of trade deficits is over. It will be: let’s talk, but otherwise we put tariffs on.”

Mr DiMicco cited the decision by Ronald Reagan (a favourite of Trump supporters) to impose a 45% tariff on Japanese motorcycles in the 1980s: “That brought people to the negotiating table.” Yet it seems implausible that trading partners will stand idly by should America raise tariffs. A trade war would come as protectionism is already on the rise. The World Trade Organisation predicts that global trade this year will grow less quickly than the world’s GDP for the first time in 15 years.

The Peterson Institute for International Economics (PIIE), a think-tank, has estimated the impact of Mr Trump’s trade policies under three scenarios, ranging from “aborted trade war”, in which Mr Trump is forced to lower tariffs within a year of imposing them, to a “full trade war” with Mexico and China. In the former case, global supply chains are disrupted and 1.3m private-sector American jobs are lost; in the latter, the damage includes the loss of 4.8m American jobs and would spill over into the services sector, too. Adam Posen of the PIIE says Mr Trump’s trade policies would be “horribly destructive”.

Neighbour makes bad fences

They may prove even more devastating abroad, especially in Mexico, where the peso slumped against the dollar. Enrique Peña Nieto, the Mexican leader, was chastised for inviting Mr Trump for talks in August. Mr Trump’s habit of insulting Mexican immigrants and his rallying cry—that he would build a wall along America’s southern border and make Mexico pay for it—have earned him much hostility in Latin America. But Mr Peña may now feel vindicated, as he has to deal with the president of his giant northern neighbour.

Mr Trump’s victory comes, cruelly, just as left-wing populism in Latin America is in retreat, opening opportunities for closer trade between the two halves of the Americas. Before the election, Latin Americans’ opinion of the United States was warmer than at any point this century. Mr Trump’s victory risks rekindling anti-yanqui sentiments, especially if he repudiates Barack Obama’s policy of normalising relations with Cuba.

Across the northern border, meanwhile, Canada frets about the economic harm that will be caused should NAFTA collapse. The United States buys about three-quarters of Canada’s exports. Some Canadians fondly imagine that a wave of young, well-educated Americans will move north, as they did during the 1970s. However, this is unlikely. A Trump presidency will hardly scare people in the way that the prospect of being drafted to fight in Vietnam did. (As Mr Trump doubtless recalls, though he was lucky enough to receive five deferments during the war.)

Mr Trump has repeatedly said that America’s willingness to defend its traditional allies should depend on whether they pay their fair share for their defence—which in Mr Trump’s view includes paying America in cash to cover the costs of protecting them. America has a justified complaint: it spends far more on defence than its European and Japanese allies put together (see chart 2). But Mr Trump risks upending the basis of post-war global security—particularly in Asia, where China is menacing its neighbours; and in Europe, where Russia has annexed Crimea and stirred a proxy war in eastern Ukraine.


In Asia American strategy has for decades been built on three pillars: open trade and the prosperity that flows from it; strong formal and informal alliances, from Japan to Australia to Singapore; and the promotion of democratic values. It is not clear that Mr Trump cares for any of them.

Mr Obama’s “pivot to Asia”—a promise to pay more attention to the world’s largest and most buoyant region—is under threat. Mr Trump will unnerve Japan, America’s staunchest friend in Asia. China may risk greater assertiveness—particularly in the South China Sea, where it has built up several reefs and atolls into military bases.

Mr Trump has suggested that Japan and South Korea should develop their own nuclear weapons rather than shelter under America’s umbrella—a recipe for regional instability and a nuclear arms race. Neither country is close to considering the possibility, and Mr Trump has played down the remarks. But fear will grow of American disengagement from Asia.

The TPP trade deal, the economic pillar of Mr Obama’s pivot to Asia, was sold as an attempt to set the world’s economic rules before they are dictated by China. But Mr Trump sees it as allowing China to come in through the back door. TPP’s proponents held out a faint hope that it could pass in the lame-duck Congress. That is now impossible. Mr Trump also says he will pull America out of the Paris climate treaty and abrogate Mr Obama’s climate agreement with China—one of the few bright spots in Sino-American relations.

Though China would be hurt by a trade war with America, Chinese hawks spot a geopolitical opening. They see Mr Trump’s election as confirmation that China is a rising power and America a declining one. “We may as well let the guy go up and see what chaos he can create for the US and the West,” wrote Global Times, a Chinese newspaper with links to the armed forces.

The thin Baltic tripwire

Mr Trump’s victory is sending shock waves through NATO, the world’s most successful military alliance. In his book “The America We Deserve” in 2000 he said that eastern Europeans should be left alone to fight out their ancient feuds. The most vulnerable point for NATO will be the Baltic states—lying on a small, flat, thinly populated strip of land with few natural frontiers and nowhere to retreat to. Providing a credible defence for Estonia, Latvia and Lithuania has been NATO’s biggest headache in recent years. The alliance has started to rotate tripwire forces through them and has cobbled together rapid-reaction forces. But NATO’s ability to deter Russia rests chiefly on Russia believing that America will act decisively and speedily in a crisis.

Fearing that Mr Trump would not, the Baltic states will now start preparing for the worst—they have boosted their territorial defences and conduct regular drills in guerrilla warfare; and they have developed defence ties with neighbouring countries such as non-NATO Sweden and Finland. They worry that Russia might seek to exploit the lame-duck period in Washington to create new facts on the ground.

Whether or not Russia takes such a gamble, the Kremlin is already crying victory. Two days before Americans voted, Dmitry Kiselev, Russia’s propagandist-in-chief, declared that the campaign had been the dirtiest in America’s history: “It was so horribly noxious that it only engenders disgust towards what is still inexplicably called a ‘democracy’ in America.” Mr Putin hopes that if Western democracy seems less attractive, there is less risk of more “colour revolutions” in Russia’s backyard.

That Mr Trump openly admires Mr Putin is a welcome bonus for the Kremlin. Mr Putin expressed the hope that Russian-American relations would improve. His dream is to see Western sanctions lifted and for Mr Trump to agree to a Yalta-style deal that would recognise a Russian sphere of influence in its “near abroad”.

There are jitters in the Middle East, too. Mr Trump has mocked the folly of toppling dictators in Iraq or Libya (though he once backed both interventions). He has also blamed American leaders for not seizing oilfields in Iraq. “We go in, we spent $3trn. We lose thousands and thousands of lives, and then look, what happens is we get nothing. You know it used to be to the victor belong the spoils,” Mr Trump said in September.

Mr Trump called Mr Obama the “founder” of the Islamic State (IS), because his withdrawal of troops from Iraq created a vacuum in which the terrorist group thrived. Without offering much detail, Mr Trump has said he would “bomb the shit out of” IS. He has also appeared to accept the notion, pushed by Russia, that Syria’s dictator, Bashar al-Assad, is a bulwark against Sunni extremism rather than a despot who provokes it. That suggests that Mr Trump will probably let the Pentagon finish the job of driving IS out of the Iraqi city of Mosul if it has not already fallen by the time he is inaugurated on January 20th. But he has shown little appetite for sustained engagement in the Middle East.

Critics, and there are many among veterans of recent Republican administrations, note that many of Mr Trump’s ideas would break American or international law. They shudder when he calls for the return of torture for terrorist suspects, and for the killing of terrorists’ families as a deterrent (which would be a war crime).

Gulf Arab leaders have been appalled by Mr Obama’s policy—his support for revolts against Arab dictators, his reluctance to be drawn into the war in Syria and his decision to sign an agreement with Iran to limit its nuclear programme. But they are even more worried about Mr Trump’s unpredictability and possible isolationism. “Russia, Iran, Iraq’s Shia militias, Syria and Hizbullah all benefit from America’s vacuum in the region and support Mr Trump,” says Oraib Rantawi, a Jordanian analyst. To that list add Egypt’s strongman, Abdel-Fattah al-Sisi, to whom Mr Trump has promised “loyal friendship”.

Like Mr Obama, Mr Trump refers to the Gulf’s oil-rich Sunni monarchies with disdain. He has also caused outrage by showing contempt for Muslim migrants and demanding that “radical Islam” be named as the true cause of terrorism.

“Trump will cut off America’s aid to the opposition,” says a forlorn Syrian rebel spokesman in Istanbul. “Aleppo will fall to the regime and opposition units either dissolve or shift to the extremists.” Iraq’s marginalised Sunnis are similarly downbeat. Many had hoped that American forces would stay the course after the expected recapture of Mosul to oversee their rehabilitation in Iraqi politics.

When talking about the Israeli-Palestinian conflict, Mr Trump pointedly does not mention the need to establish a Palestinian state. The Israeli prime minister, Binyamin Netanyahu, will probably be happy to have an American president who never presses him to trade land for peace or stop Jewish settlement-building in the West Bank. But those who know Mr Netanyahu say he is sceptical. “Bibi is risk-averse and hates surprises,” explains an ally in his Likud party. “Trump is unexpected and volatile and Bibi is like many in the Republican establishment who see him as a wild card and don’t trust him.”

America’s dealings with Iran seem likely to shift in ways that, paradoxically, may please the hardliners there. During the campaign, the state broadcaster devoted much airtime to Mr Trump’s mudslinging. The Supreme Leader, Ali Khamenei, joined in, praising the “straight-talking” Mr Trump. Confidants cheered Mr Trump’s anti-Saudi rhetoric and his good relations with Mr Putin. And so what if he loathes the nuclear agreement, or assents to Congress killing it off? Iranian conservatives have always viewed that deal with grave suspicion, as part of an American plot to gain control of their country.

Following close on Britain’s referendum to leave the European Union, Mr Trump’s election will boost populists everywhere, especially in Europe, by breaking the myth that anti-establishment groups are unelectable. The next test will be Italy’s constitutional referendum in December. A defeat for the prime minister, Matteo Renzi, which seems likely, could lead to the undoing of his government and the rise to power of the populist Five Star Movement, which wants a referendum on the euro.

Trumpeting the Donald

Then there is France. Could Marine Le Pen, leader of the ultranationalist FN, win the presidential election next spring? Before Mr Trump’s victory, the question seemed absurd. Polls suggest that she will win one of two second-round places. This in itself would be a victory of sorts, repeating the achievement of her father, Jean-Marie Le Pen, in 2002. But no polls have indicated that she could beat any of the centre-right candidates likely to face her. Now, her victory is no longer unthinkable. There was no disguising the delight at the FN headquarters in Paris. A jubilant Ms Le Pen, congratulated the American president-elect and praised the “free” American people. Even Mr Le Pen, who has fallen out with his daughter, tweeted: “Today the United States, tomorrow France!”

The parallels between Ms Le Pen and Mr Trump are striking. Both trade on simplified truths and have built platforms on rejection and nostalgia. Both have cast themselves as outsiders who stand up for people scorned by the elite. Mr Trump and Ms Le Pen are both protectionist, nationalist and fans of Mr Putin. Mr Trump wants to scrap trade deals and is impatient with encumbering alliances. Ms Le Pen wants a referendum on “Frexit”; if it passed it would spell the end of the EU.

One difference is rhetorical excess. Ms Le Pen is in some ways a Trump lite. She may share many of his reflexes, but her language is more cautious. She has never, for instance, called for all Muslims to be banned from entering France, but rather for an end to an “uncontrolled wave” of immigration. She does not promise to build walls, but to control borders. The problem, she says, is not Islam but what she calls the “Islamification” of France. In France, where Ms Le Pen is trying to transform a one-time pariah movement with neo-Nazi links into a credible party of government, such nuances remain an asset.

Viktor Orban, the prime minister of Hungary and prototype European populist, who talks of creating an “illiberal” democracy, was one of the few European leaders to endorse Mr Trump’s campaign. The Polish government, which is in many ways as populist and nationalist as Mr Trump, has been more cautious. It may dislike Muslim migrants, but it fears Russia more, and would love to see more American troops deployed on its territory.

With America in isolationist mood, Britain on the way out and France paralysed, it falls increasingly to Germany to preserve the European order. Many Germans are horrified by Mr Trump’s disdain for due process. “What sets Trump apart from any major US politician—let alone presidential candidate—in living memory is his overt, chilling contempt for the fundamental principles of the constitution. That is familiar to a German in the worst possible way,” says Constanze Stelzenmüller of the Brookings Institution, a think-tank. Yet the chancellor, Angela Merkel, weakened by the past year’s refugee crisis, will be largely reduced to “lots of hand-wringing and rhetoric and virtually no action”, says John Kornblum, a former American ambassador to Germany.

If Mr Trump’s triumph augurs yet more populist victories elsewhere, the EU itself may find it hard to hold together. A remote, complex and technocratic body, the EU is the perfect whipping boy for demagogues. As Gérard Araud, the French ambassador to Washington, put it in a tweet (now deleted): “After Brexit and this election, everything is now possible. A world is collapsing before our eyes.”


Education and class

America’s new aristocracy

As the importance of intellectual capital grows, privilege has become increasingly heritable




WHEN the candidates for the Republican presidential nomination line up on stage for their first debate in August, there may be three contenders whose fathers also ran for president. Whoever wins may face the wife of a former president next year. It is odd that a country founded on the principle of hostility to inherited status should be so tolerant of dynasties. Because America never had kings or lords, it sometimes seems less inclined to worry about signs that its elite is calcifying.

Thomas Jefferson drew a distinction between a natural aristocracy of the virtuous and talented, which was a blessing to a nation, and an artificial aristocracy founded on wealth and birth, which would slowly strangle it. Jefferson himself was a hybrid of these two types—a brilliant lawyer who inherited 11,000 acres and 135 slaves from his father-in-law—but the distinction proved durable. When the robber barons accumulated fortunes that made European princes envious, the combination of their own philanthropy, their children’s extravagance and federal trust-busting meant that Americans never discovered what it would be like to live in a country where the elite could reliably reproduce themselves.



Now they are beginning to find out, (see article), because today’s rich increasingly pass on to their children an asset that cannot be frittered away in a few nights at a casino. It is far more useful than wealth, and invulnerable to inheritance tax. It is brains.

Matches made in New Haven

Intellectual capital drives the knowledge economy, so those who have lots of it get a fat slice of the pie. And it is increasingly heritable. Far more than in previous generations, clever, successful men marry clever, successful women. Such “assortative mating” increases inequality by 25%, by one estimate, since two-degree households typically enjoy two large incomes. Power couples conceive bright children and bring them up in stable homes—only 9% of college-educated mothers who give birth each year are unmarried, compared with 61% of high-school dropouts. They stimulate them relentlessly: children of professionals hear 32m more words by the age of four than those of parents on welfare. They move to pricey neighbourhoods with good schools, spend a packet on flute lessons and pull strings to get junior into a top-notch college.

The universities that mould the American elite seek out talented recruits from all backgrounds, and clever poor children who make it to the Ivy League may have their fees waived entirely. But middle-class students have to rack up huge debts to attend college, especially if they want a post-graduate degree, which many desirable jobs now require. The link between parental income and a child’s academic success has grown stronger, as clever people become richer and splash out on their daughter’s Mandarin tutor, and education matters more than it used to, because the demand for brainpower has soared. A young college graduate earns 63% more than a high-school graduate if both work full-time—and the high-school graduate is much less likely to work at all. For those at the top of the pile, moving straight from the best universities into the best jobs, the potential rewards are greater than they have ever been.

None of this is peculiar to America, but the trend is most visible there. This is partly because the gap between rich and poor is bigger than anywhere else in the rich world—a problem Barack Obama alluded to repeatedly in his state-of-the-union address on January 20th (see article). It is also because its education system favours the well-off more than anywhere else in the rich world. Thanks to hyperlocal funding, America is one of only three advanced countries where the government spends more on schools in rich areas than in poor ones. Its university fees have risen 17 times as fast as median incomes since 1980, partly to pay for pointless bureaucracy and flashy buildings. And many universities offer “legacy” preferences, favouring the children of alumni in admissions.

Nurseries, not tumbrils

The solution is not to discourage rich people from investing in their children, but to do a lot more to help clever kids who failed to pick posh parents. The moment to start is in early childhood, when the brain is most malleable and the right kind of stimulation has the largest effect. There is no substitute for parents who talk and read to their babies, but good nurseries can help, especially for the most struggling families; and America scores poorly by international standards (see article). Improving early child care in the poorest American neighbourhoods yields returns of ten to one or more; few other government investments pay off so handsomely.

Many schools are in the grip of one of the most anti-meritocratic forces in America: the teachers’ unions, which resist any hint that good teaching should be rewarded or bad teachers fired. To fix this, and the scandal of inequitable funding, the system should become both more and less local. Per-pupil funding should be set at the state level and tilted to favour the poor. Dollars should follow pupils, through a big expansion of voucher schemes or charter schools. In this way, good schools that attract more pupils will grow; bad ones will close or be taken over. Unions and their Democratic Party allies will howl, but experiments in cities such as battered New Orleans have shown that school choice works.

Finally, America’s universities need an injection of meritocracy. Only a handful, such as Caltech, admit applicants solely on academic merit. All should. And colleges should make more effort to offer value for money. With cheaper online courses gaining momentum, traditional institutions must cut costs or perish. The state can help by demanding more transparency from universities about the return that graduates earn on their degrees.

Loosening the link between birth and success would make America richer—far too much talent is currently wasted. It might also make the nation more cohesive. If Americans suspect that the game is rigged, they may be tempted to vote for demagogues of the right or left—especially if the grown-up alternative is another Clinton or yet another Bush.



Evolution

Greater than the sum of its parts


It is rare for a new animal species to emerge in front of scientists’ eyes. But this seems to be happening in eastern North America.




LIKE some people who might rather not admit it, wolves faced with a scarcity of potential sexual partners are not beneath lowering their standards. It was desperation of this sort, biologists reckon, that led dwindling wolf populations in southern Ontario to begin, a century or two ago, breeding widely with dogs and coyotes. The clearance of forests for farming, together with the deliberate persecution which wolves often suffer at the hand of man, had made life tough for the species. That same forest clearance, though, both permitted coyotes to spread from their prairie homeland into areas hitherto exclusively lupine, and brought the dogs that accompanied the farmers into the mix.

Interbreeding between animal species usually leads to offspring less vigorous than either parent—if they survive at all. But the combination of wolf, coyote and dog DNA that resulted from this reproductive necessity generated an exception. The consequence has been booming numbers of an extraordinarily fit new animal (see picture) spreading through the eastern part of North America. Some call this creature the eastern coyote. Others, though, have dubbed it the “coywolf”. Whatever name it goes by, Roland Kays of North Carolina State University, in Raleigh, reckons it now numbers in the millions.


The mixing of genes that has created the coywolf has been more rapid, pervasive and transformational than many once thought. Javier Monzón, who worked until recently at Stony Brook University in New York state (he is now at Pepperdine University, in California) studied the genetic make-up of 437 of the animals, in ten north-eastern states plus Ontario. He worked out that, though coyote DNA dominates, a tenth of the average coywolf’s genetic material is dog and a quarter is wolf.

The DNA from both wolves and dogs (the latter mostly large breeds, like Doberman Pinschers and German Shepherds), brings big advantages, says Dr Kays. At 25kg or more, many coywolves have twice the heft of purebred coyotes. With larger jaws, more muscle and faster legs, individual coywolves can take down small deer. A pack of them can even kill a moose.

Coyotes dislike hunting in forests. Wolves prefer it. Interbreeding has produced an animal skilled at catching prey in both open terrain and densely wooded areas, says Dr Kays. And even their cries blend those of their ancestors. The first part of a howl resembles a wolf’s (with a deep pitch), but this then turns into a higher-pitched, coyote-like yipping.

The animal’s range has encompassed America’s entire north-east, urban areas included, for at least a decade, and is continuing to expand in the south-east following coywolves’ arrival there half a century ago. This is astonishing. Purebred coyotes never managed to establish themselves east of the prairies. Wolves were killed off in eastern forests long ago. But by combining their DNA, the two have given rise to an animal that is able to spread into a vast and otherwise uninhabitable territory. Indeed, coywolves are now living even in large cities, like Boston, Washington and New York. According to Chris Nagy of the Gotham Coyote Project, which studies them in New York, the Big Apple already has about 20, and numbers are rising.

Even wilier

Some speculate that this adaptability to city life is because coywolves’ dog DNA has made them more tolerant of people and noise, perhaps counteracting the genetic material from wolves—an animal that dislikes humans. And interbreeding may have helped coywolves urbanise in another way, too, by broadening the animals’ diet. Having versatile tastes is handy for city living. Coywolves eat pumpkins, watermelons and other garden produce, as well as discarded food. They also eat rodents and other smallish mammals. Many lawns and parks are kept clear of thick underbrush, so catching squirrels and pets is easy. Cats are typically eaten skull and all, with clues left only in the droppings.

Thanks to this bounty, an urban coywolf need occupy only half the territory it would require in the countryside. And getting into town is easy. Railways provide corridors that make the trip simple for animals as well as people.

Surviving once there, though, requires a low profile. As well as having small territories, coywolves have adjusted to city life by becoming nocturnal. They have also learned the Highway Code, looking both ways before they cross a road. Dr Kays marvels at this “amazing contemporary evolution story that’s happening right underneath our nose”.

Whether the coywolf actually has evolved into a distinct species is debated. Jonathan Way, who works in Massachusetts for the National Park Service, claims in a forthcoming paper that it has. He thinks its morphological and genetic divergence from its ancestors is sufficient to qualify. But many disagree. One common definition of a species is a population that will not interbreed with outsiders. Since coywolves continue to mate with dogs and wolves, the argument goes, they are therefore not a species. But, given the way coywolves came into existence, that definition would mean wolves and coyotes should not be considered different species either—and that does not even begin to address whether domestic dogs are a species, or just an aberrant form of wolf.

In reality, “species” is a concept invented by human beings. And, as this argument shows, that concept is not clear-cut. What the example of the coywolf does demonstrate, though, is that evolution is not the simple process of one species branching into many that the textbooks might have you believe. Indeed, recent genetic research has discovered that even Homo sapiens is partly a product of hybridisation. Modern Europeans carry Neanderthal genes, and modern East Asians the genes of a newly recognised type of early man called the Denisovans. Exactly how this happened is unclear. But maybe, as with the wolves of southern Ontario, it was the only way that some of the early settlers of those areas could get a date.



Monday, October 24, 2016

Ten discoveries that no one can explain

Ten discoveries that no one can explain



The history of the world is full of surprising mysteries. None of us will live long enough to see them all solved. But it’s always interesting to have a look at some of the truly bizarre things which lie beneath the surface.



1. Moa Birds




Moa birds were flightless birds that used to inhabit New Zealand, which became extinct around the year 1500. They were killed off, according to one theory, by the Māori people. During an expedition in the twentieth century, scientists stumbled across a very large claw from one of the birds which had somehow been incredibly well preserved for centuries.


2. The Temple Complex of Saksaywaman, Peru




The perfect stonework of this ancient temple complex, which was completed without the use of a single drop of mortar, is truly amazing. In some cases, it’s impossible to pass even a piece of paper between the stones. Every block, moreover, has a smooth surface and rounded corners. How was it constructed? No one knows.


3. Gate of the Sun, Bolivia




The Gate of the Sun can be found in Tiwanaku — an ancient and mysterious city in Bolivia. Some archaeologists believe that it was the centre of a huge empire during the first millenium AD. No one has any idea what the carvings on the Gate are meant to mean. Possibly, they have some astrological or astronomical significance.



4. The Longyou Caves, China




These caves were gouged out of sandstone by human hands. Such difficult work would have required the participation of thousands of people. Yet there is no mention of these caves, or the methods used to construct them, anywhere in historical records.



5. The Unfinished Obelisk, Egypt



This obelisk initially began to be carved straight out of a rock face, but it appears that it began to crack. It was left in this condition, unfinished. Its size is simply staggering!



6. The Underwater City of Yonaguni, Japan




This ancient complex was discovered by chance by diving instructor Kihachiro Aratake. The underwater city has confounded all scientific theories. The rock from which it is carved was submerged underwater about 10,000 years ago — long before even the Egyptian pyramids were erected. Some archaeologists believe that during this primitive era, people still huddled in caves and lived off edible roots rather than hunted; they certainly couldn’t erect stone cities.



7. Mohenjo-daro (’The Mound of the Dead’), Pakistan




The secret of this city’s downfall has perplexed experts for decades. In 1922, the Indian archaeologist R. D. Banerji discovered ancient ruins on one of the islands in the Indus River. Questions arose: how was this great city destroyed? What happened to its inhabitants? Numerous excavations have not offered any answers.




8. L’Anse aux Meadows, Canada





This archaeological site in Canada was once a settlement founded by the Vikings about a thousand years ago. The fact that it exists indicates that the Scandinavian seafarers reached North America long before the birth of Christopher Columbus.




9. Stone-Age Tunnels




The discovery of an extensive network of underground tunnels, which stretch across all of Europe from Scotland to Turkey, shows that stone-age communities were not simply hunter-gatherers. But the real purposes of the tunnels is still a mystery. Some researchers believe they were used as protection against predators, whilst others believe they provided a way to travel around in safety, protected from the rigours of the weather and various conflicts.




10. The giant stone spheres of Costa Rica





These mysterious stone formations are intriguing not only for their perfectly spherical shape, but also on account of their unknown origins and purpose. They were discovered in the 1930s by workers clearing the jungle from a banana plantation. Local legends suggested that the mysterious spheres contained hidden gold, but they turned out to be empty.

Koh-i-Noor to Hope: 5 of the most expensive diamonds in the world will blind you with their beauty

Koh-i-Noor to Hope: 5 of the most expensive diamonds in the world will blind you with their beauty

From their price to their size, not just the legendary Koh-i-Noor, all these diamonds will blind you with their beauty!



With four countries including India laying the claim on the Koh-i-Noor, considered to be the most expensive diamond in the world, the stone's changed hands time and again before ending up in Britain. While the diamond belonged to the Mughals who ruled the Indian subcontinent, it was snatched by Persian ruler Nadir Shah who invaded the country in the 18th century.
Soon after the diamond came in the possession of Ahmad Shah Durrani, whose descendant Shuja Shah Durrani brought the Koh-i-noor back to India in early 19th century after which the diamond ended up with Maharaja Ranjit Singh--the founder of the Sikh empire.

While the ruler had willed the diamond to the Jagannath Temple in Puri, his will wasn't executed by the East India Company. After the Sikhs lost in the Second Anglo-Sikh War, the stone came in the possession of the British empire.
Even today, every time the news of any political exchange between India and Britain breaks out, the Indian population nevers fails to point out that their diamond be returned to the country. However it's only after a PIL filed by All India Human Rights & Social Justice Front, regarding the diamond's return to which the country's Solicitor General Ranjit Kumar's replied, "It was given voluntarily by Ranjit Singh to the British as compensation for help in the Sikh Wars. The Koh-i-Noor is not a stolen object," that the subject has gained momentum again.
The Koh-i-Noor means the Mountain of Light in Persian and can be seen at the Tower of London, adorning the Queen's crown. However the 105.60 carat diamond isn't the only known stone in the world.




Here are the nine most expensive diamonds in the world...


Sancy

sancy


Weighing 55.23 carats, the priceless pale yellow diamond again has Indian origins and is considered to be one of the first large diamonds to be cut with symmetrical facets. The diamond is on display at the Apollo Gallery at the Louvre.



Cullinan

Cullinan


Valued at USD 400 million or Rs 26,62,13,80,000, the Cullinan Diamond weighs 3,106,75 carats and is famous for being the largest gem-quality diamond found in the world. It was cut into nine diamonds, of which the Cullinan I and Cullinan II are most famous and can be viewed at the Tower of London as they adorn the Sovereign's Scepter with Cross and the Imperial State Crown.



Hope


Hope


Believed to have originated in India, the diamond weighs 45.52 carats and is on display at the National Natural History Museum in Washington, D.C. The legendary diamond is famous for its deep-blue colour and gives a red glow after being exposed to ultraviolet light. It's currently valued at USD 350 million or Rs 23,28,95,07,500 and has also made a name for itself as a cursed stone that brings bad luck or death to its owners.




De Beers Centenary Diamond

De Beers Centenary Diamond


Valued at USD 100 million or Rs 6,65,40,45,000, the De Beers Centenary Diamond is among the most beautiful diamonds in the world to have received grade D rating by the Gemological Institute of America for being internally and externally flawless and for belonging to the highest grade of colourless diamonds. The sparkler has been cut into a heart shape without a groove.



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The world's top 10 biggest diamond mines

The world's top 10 biggest diamond mines



The ten largest diamond mines in the world by measurable reserves contain more than one billion carats of recoverable diamonds. Russia is home to half of the world's biggest diamond mines, while Botswana houses two; including the world's largest diamond producing mine Orapa. Mining-technology.com profiles the top 10 biggest mines based on contained diamond reserves and excluding alluvial diamond mining projects.




Jubilee


Jubilee, also known as the Yubileyny diamond mine, located in Sakha (Yakutia), Republic of Russia, is the biggest diamond mine in the world. The mine was estimated to contain more than 153 million carats (Mct) of recoverable diamonds, including 51Mct of probable underground reserves as of January 2013.

The open-pit diamond mine is owned and operated by the Aikhal mining and processing division of Russia's state-owned diamond company Alrosa.

The mine has been in production since 1986. It extracts diamond ore from the Yubileynaya kimberlite pipe, which was estimated to contain Joint Ore Reserves Committee (JORC)-compliant probable reserves of 107.163 million tonnes (Mt) grading 0.90 carat per tonne (ct/t) as of July 2013.

Jubilee diamond mine produced 10.4Mt of ore in 2012. The open pit mine is presently operating at a depth of 320m, but is expected to eventually reach 720m.

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Udachny


Udachny diamond mine, also located in the Yakutia region of Russia, ranks as the world's second largest diamond mine by reserve size. Estimated diamond reserves at the mine exceeded 152Mct as of January 2013.

The mine is owned by Alrosa and operated by its Udachny mining and processing division. The mine extracts ore from the Udachnaya Kimberlite pipe, whose JORC-compliant diamond reserves as of July 2013 were estimated at more than 120Mct, including 7.3Mct of proven reserve from the ore stockpile. Udachny is bigger than Jubilee in terms of JORC reserve estimates.

The Udachnaya pipe discovered in 1955 is the largest diamond deposit in Russia. Udachny, which is one of the deepest open pit mines in the world, produced 10Mct of diamonds a year until 2011. The open pit operation is, however, expected to close in 2014, while the underground operation is expected to continue for more than 30 years.

Mir


Mir or Mirny, another diamond mine in the Yakutia region of Russia, is the third biggest diamond mine in the world. The underground diamond mine was estimated to contain more than 141Mct of probable diamond reserves as of January 2013.

The diamond mine is owned and operated by the Mirny mining and processing division of Alrosa. It extracts diamond ore from the Mir kimberlite pipe, whose JORC reserve stood at 29.586Mt grading 3.29ct/t diamond as of July 2013.

The Mir pipe was discovered in 1955. Open-pit mining started in 1957 and closed in 2001. Underground mining at Mir has been underway since 2009. The mine produced 497,000 tonnes of ore in 2012. The production is expected to reach 1Mt by 2014.

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Argyle


Argyle diamond mine located in the Kimberley region of Western Australia ranks as the world's biggest diamond mine if JORC reserves alone are taken into account. The recoverable diamond reserve at Argyle as of December 2012 was estimated to be 140Mct (67Mt grading 2.1ct/t diamond).

The diamond mine, owned by Rio Tinto, has been in production since 1983. Argyle is currently transitioning from open pit to underground operations to access diamonds at depth. Argyle Underground will be the first block cave mine in Western Australia.

At peak production Argyle Underground is expected to produce 20Mct of diamonds a year, which will make it the largest diamond producing mine in the world.

The open pit mine has produced more than 791Mct of diamonds in its life, which the company believes will extend beyond 2020.

Catoca


Catoca diamond mine in Angola ranks as the fifth biggest diamond mine in the world. The Catoca open-pit located near Saurimo, around 840km east of Luanda, is estimated to contain up to 130Mct of mineable diamonds.

The diamond mine is operated by Sociedade Mineira de Catoca, a joint venture of Angola's state-owned diamond company Endiama (32.8%), Alrosa (32.8), as well as China and state oil producer Sonangol (18%) and Odebrecht of Brazil (16.4%). The mine has been operational since 1993.

Catoca mine produced 6.5Mct of diamonds from around 10Mt of ore in 2012, which accounted for about 70% of Angola's total diamond output. The open-pit currently operating at a depth exceeding 200m is scheduled to reach at least 600m deep. The mine life of Catoca is extendable up to 30 years.

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Venetia


Venetia diamond mine located 80km from Musina in Limpopo Province of South Africa ranks as the world's sixth largest diamond mine. Venetia's diamond reserves as of December 2012 stood at more than 102Mct. The open pit reserves are estimated to be 32.8Mct (33.6Mt grading 0.975ct/t diamond) and the underground diamond reserves are estimated at 70Mct (91.4Mt grading 0.765ct/t diamond).

Venetia is the largest diamond producing mine in South Africa. It produced 3.066Mct of diamonds from 5.618Mt of ore in 2012. The deposit comprises of 12 kimberlite pipes.

The mine is owned and operated by De Beers and has been in production since 1992. The open-pit operation is expected to continue up to 2021, after which it will be switched over to underground mining. The mine life of Venetia Underground is expected to be more than 20 years.

Grib


Grib diamond mine, which is yet to commence commercial production, is Russia's fourth largest and world's seventh largest diamond mine. The estimated diamond reserve of the mine exceeds 98Mct.

The mine is being developed by Russian oil company Lukoil through its diamond-mining subsidiary Arkhangelskgeoldobycha (AGD). The mine will extract the Grib pipe situated at Verkhotina in the Arkhangelsk region of north-western Russia.

Diamond mining at Grib is expected to begin by early 2014. The annual diamond production at Grib is anticipated to be 4Mct. The mine is planned to go underground after 16 years of open-pit operation. The mine is expected to be put up for sale after the commencement of production.

Jwaneng


Jwaneng diamond mine in African country Botswana ranks as the eighth biggest diamond mine in the world. The open-pit mine located 160 miles south-west of Gaborone in south central Botswana was estimated to contain diamond reserves of 88.3Mct (70.1Mt grading 1.26ct/t diamond) as of December 2012.

Jwaneng is considered to be the world's richest diamond mine in terms of value, and is owned by Debswana, a partnership between the De Beers and the Government of Botswana. The mine has been in production since 1982. It accounts for up to 70% revenue of Debswana, which operates four diamond mines in Botswana.

The mine produced 8.172Mct of diamonds in 2012 and 10.641Mct in 2011. The current operating depth of the Jwaneng pit is 350m. The mine is, however, expected to reach a depth of 625m by 2017. A major extension project, namely Cut-8, has been underway at Jwaneng since 2010, which will extend the mine's life to at least 2025.

Orapa


Orapa diamond mine located 240km west of Francistown city in Central Botswana is the ninth largest diamond mine in the world by reserve. The open-pit mine was estimated to contain 85.7Mct of diamond reserves (146.1Mt grading 0.587ct/t diamond) as of December 2012.

Orapa has been in production since 1971. It is the oldest of the four diamond mines operated by Debswana. The kimberlite pipe mined by Orapa is one of the largest in the world. It covers an area of 118km² at the surface.

Orapa produced 11.089Mct of diamonds in 2012, compared to 11.158Mct in 2011. Orapa is the world's biggest diamond mine based on 2012 production. The mine achieved a record production of 17.3Mct in 2006.

Botuobinskaya


Botuobinskaya diamond mine, due to commence production in 2015, is located in the Nakyn kimberlite field, around 200km north-west of Nyurba in the Yakutia region of Russia.

The mine will extract from the Botuobinskaya pipe which contains 70.9Mct of JORC-compliant diamond reserves (13.839Mt grading 5.13ct/t diamond).

The mine is owned and operated by Nyurba mining and processing division of Alrosa. Alrosa's Nyurba division has been mining the Nyurbinskaya pipe three kilometres away from the Botuobinskaya pipe since 2000.

The JORC reserve of Nyurbinskaya (Nyurba) open-pit mine was estimated at 40.394Mct as of July 2013. Nyurba mine produced 7.955Mct of diamond in 2012.

Striping operations at the Botuobinskaya pipe began in December 2012. The Botuobinskaya mine is expected to produce 1.5Mct of diamonds annually for more than 40 years from the start of operations.





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