The Hot Zone

This old lake

Lake Tanganyika is the world’s longest lake and at 10 million years, one of the oldest. Straddling four countries in East and Central Africa, Tanganyika spans 418 miles and plunges 1,870 feet deep, making it an important source of freshwater and fish for millions of people. It so happens that its features also make it a geologic gold mine. Deep in these waters, researchers are finding out more about modern day climate change. Lake Tanganyika. Photo courtesy of NASA Taking sediment cores from... [Read more]

Posted by Alison Hawkes on June 2, 2010 No Comments »
Category : Climates of the Past, The man made climate

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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