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Ancient African Megadroughts May Have Driven Human Evolution -- Out Of Africa
October 8, 2007 — From 135,000 to 90,000 years ago tropical Africa had megadroughts more extreme and widespread than any previously known for that region, according to new research. Learning that now-lush tropical ... > full story -
Antarctic Plants And Animal Life Survived Ice Ages
September 27, 2007 — Springtails, mites, worms and plant life could help solve the mystery of Antarctica's glacial history according to new research. Scientists report that the evolutionary history of Antarctica's ... > full story -
Carbon Dioxide Did Not End The Last Ice Age, Study Says
September 27, 2007 — A new study contradicts the view that carbon dioxide was responsible for the meltdown that ended the last ice age. Deep-sea temperatures rose 1,300 years before atmospheric carbon dioxide, ruling out ... > full story -
Cave Records Provide Clues To Climate Change
September 26, 2007 — Growing inside the caves of the tropical Pacific island of Borneo are some of the keys to understanding how the Earth's climate suddenly changed - several times - over the last 25,000 years. Using ... > full story -
Extraterrestrial Impact Likely Source Of Sudden Ice Age Extinctions
September 24, 2007 — What killed the woolly mammoths? Scientists now suggests that a comet or meteorite exploded over the planet roughly 12,900 years ago, causing the abrupt climate changes that led to the extinction of ... > full story -
Increased Bering Sea Ice Explains Prehistoric Fur Seal Rookeries
September 17, 2007 — The Bering Sea provides critical habitat for many species of marine mammals, including seals, sea lions and whales. The predictable formation and movement of sea ice is a defining feature of this ... > full story -
New Evidence On The Role Of Climate In Neanderthal Extinction
September 12, 2007 — The mystery of what killed the Neanderthals has moved a step closer to resolution after a new study has ruled out one of the competing theories -- catastrophic climate change -- as the most likely ... > full story -
Refugia Of Brazilian Atlantic Rainforest Could Be Basis For Its Regeneration
September 5, 2007 — Changes that have occurred in Brazil tropical rainforest for more than 100,000 years were studied by a team of researchers. They combined data from botany, palynology and genetics. Results indicated ... > full story -
Looking For Life In And Under Antarctic Ice
August 31, 2007 — Antarctica is home to the largest body of ice on Earth. Prior to approximately 10 years ago, no one thought that life could exist beneath the Antarctic ice sheets, which can be more than two miles ... > full story -
Ethiopian Plateau Formation Coincided With Climate Change That May Have Spurred Human Evolution
August 28, 2007 — More than three million years ago, early hominins evolved the ability to walk upright and in doing so started us along the evolutionary path that eventually gave rise to Homo sapiens. It was Darwin ... > full story
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