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(elnavegante/Getty Images) Over the last 25 years, the ozone hole which forms over Antarctica each spring has started to shrink. But over the last four years, even as the hole has shrunk it has persisted for an unusually long time. Our new research found that instead of closing up during November it has stayed open well into December.… 
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Scoop.it!
In 1916, when a Chilean ship rescued a group of shipwrecked British explorers on a failed attempt at the first land crossing of Antarctica, the men were on the brink of starvation. They’d resorted …
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Scoop.it!
In 1985, atmospheric scientists in Antarctica noticed something troubling. For decades, they’d been measuring the thickness of the ozone layer in the upper atmosphere, the layer of gas that deflects much of the sun’s radiation. Starting in the 1970s, it had started plummeting. By the mid-1980s, they observed that it was on track to be wiped out in the next few decades.
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