The Hot Zone

Climate change could signal prolonged droughts in American Southwest

Think the 1930s “Dust Bowl” was bad in the American West? Scientists have found evidence of “mega-drought” events that lasted centuries to millennia in the same region during warm, interglacial periods in the Pleistocene era (370,000-550,000 years ago). The evidence heightens concern over how the region will react to the modern day global temperature spikes. A dust storm in Oklahoma, 1936. Photo: Arthur Rothstein The American Southwest is already predicted to get pretty dry... [Read more]

Posted by Alison Hawkes on February 25, 2011 1 Comment »
Category : Climates of the Past

The Big Freeze

Around 12,000 years ago, the Earth spun into The Big Freeze, a (geologically) brief cold snap known as the Younger Dryas event. Glaciers returned to parts of the Northern Hemisphere and humans who were around then probably shivered quite a bit. The Clovis people in North American, the first paleo-Indian inhabitants that made distinctive bone and ivory tools, took a population nosedive. What caused The Big Freeze? The prevailing theory is a shutdown of the ocean conveyor belt caused by a rapid influx... [Read more]

Posted by Alison Hawkes on June 1, 2010 No Comments »
Category : Climates of the Past

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