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Greenhouse Methane Released From Ice Age Ocean
August 29, 2006 — Periods of warming temperatures during the last ice age triggered the release of methane from beneath the ocean, according to U.S. and French researchers. Once in the atmosphere, the methane would ... > full story -
Study Rules Out Ancient 'Bursts' Of Methane From Seafloor Deposits
August 24, 2006 — A dramatic increase about 12,000 years ago in levels of atmospheric methane, a potent greenhouse gas, was most likely caused by higher emissions from tropical wetlands or from plant production, ... > full story -
Clock In The Rock: Geologist Leads Effort To Measure Earth's History
August 22, 2006 — The mass extinction of dinosaurs occurred about 66 million years ago, at the end of the Cretaceous Period (K) and the beginning of the Tertiary Period, known as the K-T boundary. A massive asteroid ... > full story -
Burning Wetlands Unleash Sequestered Mercury In Wake Of Climate Change
August 22, 2006 — Climate change appears to be contributing to the waking of a dangerous sleeping giant in the most northern wetlands of North America -- mercury. Released into the atmosphere most prodigiously with ... > full story -
Climate Change Was Major Factor In Erosion Of Alps 6 Million Years Ago
August 15, 2006 — The Alps might have reached their zenith 6 million years ago and have been declining since. New research suggests the culprit was likely massive erosion, triggered by a sudden drop in the level of ... > full story -
Ancient Arctic Water Cycles Are Red Flags To Future Global Warming
August 12, 2006 — Ancient plant life recovered in recent Arctic Ocean sampling cores shows that at the time of the last major global warming, humidity, precipitation levels and salinity of the ocean water altered ... > full story -
Ancient Bison Teeth Provide Window On Past Great Plains Climate, Vegetation
August 7, 2006 — Scientists have devised a way to use the fossil teeth of ancient bison as a tool to reconstruct historic climate and vegetation changes in America's breadbasket, the Great ... > full story -
Cosmic Dust In Ice Cores Sheds Light On Earth's Past Climate
July 27, 2006 — Each year nearly 40,000 tons of cosmic dust fall to Earth from outer space. The first successful chronological study of extraterrestrial dust in Antarctic ice has shown that this amount has remained ... > full story -
Ice Sheets Drive Atmospheric Carbon Dioxide Levels, Inverting Previous Ice-Age Theory
July 25, 2006 — New study provides a novel explanation for the rhythms of the ice ages, inverting established theory. New hypothesis may explain why the strongest cycles of ice response are not in correspondence ... > full story -
Catastrophic 'Lake Burst' Chills Climate
June 30, 2006 — Ocean circulation changes during the present warm interglacial were more extensive than previously thought, according to new research by the University of East Anglia (UEA) and Cardiff ... > full story
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