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Politics : The Obama - Clinton Disaster -- Ignore unavailable to you. Want to Upgrade?

To: PROLIFE who wrote (4235)	1/1/2009 3:35:33 PM
From: puborectalis	Read Replies (1) \| Respond to of 103300

Coral growth in decline at Great Barrier Reef Warming, more acidic oceans cited; 'pretty scary' findings, one expert says. The rate at which corals absorb calcium from seawater to calcify their hard skeletons — and thus grow — has declined dramatically in the last two decades and signs point to manmade greenhouse gas emissions as the culprit, according to a study of samples from Australia's Great Barrier Reef. Researchers with the Australian Institute of Marine Science looked at the skeletal records of porites corals collected over the years at 69 reefs along the 1,600-mile-long Great Barrier Reef. Those corals, some 400 years old, showed that calcification declined by 13 percent between 1990 and 2005. "The data suggest that such a severe and sudden decline in calcification is unprecedented in at least the past 400 years," the researchers stated in the study, published in the peer-reviewed journal Science.