Key Antarctic food source is declining, study says
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A key food source for Antarctic seals, whales and penguins has declined about 80 percent since the 1970s in waters near the Antarctic Peninsula, researchers report.
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Two-thirds of the world's polar bears will be killed off by 2050 &#151; and the entire population gone from Alaska &#151; because of thinning sea ice from global warming in the Arctic, government scientists forecast Friday.
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CAPE CANAVERAL, Fla. - Food is running so low aboard the international space station the two crewmen have been instructed to cut back on calories, at least until a Russian supply ship arrives in a little over two weeks, NASA said Thursday.
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NASA scientists reported that higher temperatures and a retreat of the sea ice over the last two winters offered new evidence that the gases were influencing the ArcticÂs climate.
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Krill, the heart of the rich Antarctic food chain that nourishes whales, seals and penguins, have declined by more than 80 percent in the past 25 years in key ocean regions, according to a new study that links the loss to warming temperatures.
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Unless urgent action is taken to slow down global warming polar bears will be extinct by the end of the century. The stark warning is contained in an authoritative report compiled by more than 250 scientists on the effects of climate change in the Arctic.
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PUNTA ARENAS, Chile -- The worst of the ozone hole has pulled back once more to Antarctica this southern spring, leaving behind a shadow of uncertainty for the people living at the bottom of the Americas.
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Female polar bears weigh nearly 150 pounds (65 kilograms) less on average than they did 25 years ago, because the ice on which they hunt is melting earlier, research shows.
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Some of Antarctica&#39;s glaciers are melting faster than snow can replace them, enough to raise sea levels measurably, scientists have reported.
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Scientists say there has been a worrying drop in the amount of CO2 soaked up by the world's oceans.
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Spindly orange sea stars, fan-finned ice fish and herds of roving sea cucumbers are among the exotic creatures spied off the Antarctic coast in an area formerly covered by ice, scientists reported on Sunday.
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A global warming trend will reduce farm yields and make food supplies scarcer over the next century, an environmental group said Thursday, citing data from the United Nations and the National Academy of Sciences and trends in the world rice market.
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CAPE CANAVERAL, Florida: Food is running so low aboard the International Space Station that its two crewmen have been instructed to cut back on calories, at least until a Russian supply ship arrives in a little over two weeks.
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NASA, Canadian, and European satellites have observed worrying increases in the flow of glaciers into the open ocean, following the breakup of ice shelves in Antarctica.
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The glaciers in West Antarctica have substantially increased their rate of shrinkage compared with the 1990s. US-Chilean teams report to the journal Science that the glaciers are losing 60% more ice into the
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Shrinking polar ice caps will cause at least two-thirds of the worldâs polar bears to disappear by 2050, government scientists reported on Friday.
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The United Nationsâ top food and agriculture official said Monday that the world food supply is dwindling and that food prices are soaring to historic levels.