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That's not n(Ice)
Posted on August 20, 2008
Lights on in Kentucky and Indiana means pollution in the Arctic. But not as much in the past, thanks for modern pollution controls.It's a fascinating study from the Desert Research Institute in Reno, Nev., involving an analysis of an ice core from Greenland. The core shows a continuous record of the monthly deposition of thallium, cadmium and lead from 1772 forward. From the BBC:Graphs show all three metals soaring between 1850 and 1900 as the industrial age took off. The early 20th Century saw inputs 10 times higher than in pre-industrial times. The Great Depression of the 1930s saw levels di...
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