Science Show - 2008-09-06

A punt on the Cam This week on The Science Show Cambridge virologist Chris Smith takes us punting along the Cam River. As he weaves around the old stone colleges, scientists jump on and off the punt, discussing their work as they go. A local guide describes the intriguing history of Cambridge, its colleges and the beautiful bridges across the river. The punt traverses The Backs, a one-mile stretch of river that supports some of finest examples of architecture in England. Eruption of Sumatra´s Mt Toba Martin Williams found volcanic ash in India.

It came from Mt Toba in Sumatra 73,000 years ago. The explosion of Mt Toba was the biggest bang in 2 million years. For comparison, Krakatoa ejected about 18 cubic kilometres of ash and rock, but it´s thought Toba ejected 3,000 cubic kilometres of ash and rock.

The eruption of Toba changed world climate. Temperatures in Greenland dropped 16 degrees.. Sat Sep 2008 12:09 (2 months, 2 weeks ago)
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