Deep ice tells long climate story
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Carbon dioxide levels are higher now than at anytime in the last 800,000 years, Antarctic ice shows.
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The collapse of two Antarctic ice shelves is offering scientists a glimpse of rarely seen species&#8212;and at how pristine ocean ecosystems respond to sudden change.&#149; See photos >>
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A sudden influx of freshwater from North America's ancient Lake Agassiz to the North Atlantic 8,200 years ago triggered a precipitous cooling of the region, scientists believe. Now they are trying to predict if and when a similar scenario might happen again.
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Russian geologists say they have data that would support a claim to a huge energy-rich area in the Arctic.
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Scientists say changes in the earth's climate from human influences are occurring particularly intensely in the Arctic region, evidenced by widespread melting of glaciers, thinning sea ice and rising permafrost temperatures.
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It may be freezing cold and covered in ice now but 70 million years ago the Arctic Ocean was as tepid as the Mediterranean.
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Global warming could lead to a big chill in the North Atlantic, at least if history is anything to go by, researchers reported on Friday.
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EDMONTON - A comprehensive scientific study of the Arctic climate has confirmed what Canadian Dene and Inuit have been saying for years: the North is melting, and faster all the time.
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Ice cores drilled from deep beneath the floor of the Arctic Ocean show it was once warm enough for swimming.
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Arctic sea ice in winter is melting far faster than before, two new NASA studies reported Wednesday, a new and alarming trend that researchers say threatens the ocean's delicate ecosystem.
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The well-preserved carcass of a 10,000-year-old baby mammoth has been unearthed in the northern Siberian permafrost, a discovery scientists said could help in climate change studies.
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Very long icicles Deep ice cores from Antarctica reveal there is more carbon dioxide in the atmosphere today than at any time in the last 800,000 years.â¦
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There's more to the recent dramatic and alarming thawing of the Arctic region than can be explained by man-made global warming alone, a new study found. Nature is pushing the Arctic to the edge, too.
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Carbon dioxide, a greenhouse gas that has become a bane of modern society, may have saved Earth from freezing over early in the planet's history, according to the first detailed laboratory analysis of the world's oldest sedimentary rocks.
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Palm trees in Canada? No ice anywhere? The future could look like Earth's hottest ancient epoch, says a new study of carbon dioxide levels.
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Global warming is causing the Arctic ice-cap to melt at such an unprecedented rate that by the summer of 2070 it may have no ice at all, according to the most comprehensive study carried out on global climate change in the region.
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Foreign Corresp. European scientists have recovered ice which is 900,000-years-old, the oldest ever found, in the Antarctic during research into the continent's climate.