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Earth's Coral Reefs May Be Wiped Out Entirely By The End Of The Century


Coral Reefs

Coral reefs, which cover about 280,300 square kilometers of the world's oceans, will likely disappear by the end of this century, according to a new book released today by a top United Nations scientist, reports The Independent.

This would be a new first for mankind, in which an entire ecosystem is eliminated from the Earth by human activity.  

The fragile coral ecosystem is mainly under threat from climate change and ocean acidification, though overfishing, water pollution and urban development have also also attributed to the reefs' decline. 

From The Independent:

Carbon emissions generated by human activity, especially our heavy use of fossils fuels, are the biggest cause of the anticipated rapid decline, impacting on coral reefs in two main ways. Climate change increases ocean surface temperatures, which have already risen by 0.67C in the past century. This puts corals under enormous stress and leads to coral bleaching, where the photosynthesising algae on which the reef-building creatures depend for energy disappear. Deprived of these for even a few weeks, the corals die.

On top of this comes ocean acidification. Roughly one-third of the extra carbon dioxide we put into the atmosphere is absorbed through the ocean surface, acidifying shallower waters. A more recently recognized problem in tropical reef systems, the imbalance created makes it harder for reef organisms to retrieve the minerals needed to build their carbonaceous skeletons. "If they can't build their skeletons – or they have to put a lot more energy into building them relative to all the other things they need to do, like reproduce – it has a detrimental effect on the coral reefs," says Paul Johnston of the University of Exeter, and founder of the UK's Greenpeace Research Laboratories.

Despite occupying less than one tenth of one percent of the oceans, coral reefs are home to about a quarter of all marine species. They are often referred to as "rainforests of the sea" due to their immense biodiversity. Some 275 million coastal residents who depend on coral reefs for their livelihood and nutrition will also be affected if the marine structures become extinct. 

Read more at The Independent >

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Source: http://feedproxy.google.com/~r/businessinsider/~3/b3OvjBR-2-c/humans-coral-reefs-paul-johnston-2011-9

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SERENA ISN'T ALONE: The Greatest Sporting Freak-Outs Of All Time


John McEnroe They Cannot Be Serious

SERENA WILLIAMS’ LATEST outburst at the US Open is not the first time the American has made headlines for all the wrong reasons.

She is, however, not alone either and most definitely will not be the last highly-strung, competitive sports star to have ‘a moment’ in the public eye. There were plenty of examples to choose from and here are some of our favorites.

This post originally appeared at The Score.

John McEnroe

We start with tennis and another American – just for the day that is in it. Here John McEnroe indulges in some straight talking with the umpire Ted James during his first-round match against Tom Gullikson. He was later fined $1,500 and almost thrown out of the Championship for calling James “the pits of the world.”

Michael Schumacher

With valuable championship points at stake, Schumacher is stuck behind David Coulthard for several laps in awful conditions at the Belgian Grand Prix in 1998. The Scot eventually slows to allow his team-mate’s title rival by – except that the Ferrari racer runs straight into the back of the McLaren, ending his race, and he later accuses Coulthard of trying to kill him. Check out Ferrari and McLaren mechanics trying to keep both men separated in the pit lane from about 2.30 minutes in.

Didier Drogba

Having seen his side knocked out of the Champions League because of a late goal from the boot of Barcelona’s Andres Iniesta, Didier Drogba first vents his frustrations with referee Tom Henning Ovrebo before sharing his opinion of the Norwegian’s performance with the television cameras.

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Russia Wants To Sell Hundreds Of Its T-50 Stealth Fighters To Syria And Iran


T-50

The Russian defense ministry believes it will sell more than 1,000 T-50s in the coming decades with a third of those sales going to countries not yet signed onto the program.

Russia and India are coordinating an effort to bring the stealth fighter to their fleets by 2015, but Fridays announcement predicts that up to 388 aircraft will be sold to nations around the world.

Syria, Algeria, and Kazakhstan could be the first to take delivery in 2025, with prospective sales to Brazil, Venezuela, and Argentina coming between 2027 and 2032.

Iran is also an option, if it can get its arms embargo lifted, as well is China, though Russia is reluctant to trust the CCP with its intellectual property.

The Russians sold China several Sukhoi Su-27s to China only to find them cloned and built at home.

There are currently two prototype T-50s in service after debuting at the Moscow Air Show last month.

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Source: http://feedproxy.google.com/~r/businessinsider/~3/j6TZu71fDN8/russia-expects-to-sell-1000-of-its-t-50-stealth-fighter-jets-2011-9

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