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POPSArctic sea ice melt 'even faster' Greenland is already losing ice to the oceans, contributing to the gradual rise in sea levels. The ice cap holds enough water to lift sea levels globally by about 7m (22ft) if it all melted. Natural climatic cycles such as the Arctic Oscillation play a role in year-to-year variations in ice cover. But Julienne Stroeve believes the sea ice is now so thin that there is little chance of the melting trend turning round. "If the ice were as thin as it was in the 1970s, last year's conditions would have brought a dip in cover, but nothing exceptional. "But now it's so thin that you would have to have an exceptional sequence of cold winters and cold summers in order for it to rebuild."
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POPSNotes on a Sick Planet The authors may reach a bit when they try to sound less square, likening the buying of compact fluorescent light bulbs to “an upgrade on your iTunes software.” But they make the science relevant and enjoyable with abundant visuals and conclude with some meaty ways for kids to make a difference. The old standbys are all there (switch light bulbs, recycle, use canvas bags at the grocery store). But I smiled on noticing something new: the authors suggest some “sustainable careers” kids can consider, like meteorologist and “glacial geologist.”
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POPSIs climate change boosting hurricanes? What it tells us, says Mooney, is that the link between climate change and hurricanes is complicated. As he emphasizes again and again, “global warming did not cause Hurricane Katrina, or any other weather disaster.” On the other hand, statistical analysis of the past century’s hurricanes and computer modeling of a warmer climate, nudged along by greenhouse gases, does indicate that rising ocean temperatures could fuel hurricanes that are more intense.
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POPSEarth is smaller than we think! German scientists from Bonn University have discovered that our planet is smaller than originally thought. The difference is only 5 milimeters but they said the it was "crucial" when it comes to studying climate change.
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