Thursday, 22 October 2009
Talking to the US Senate
Letter of the week from US scientists to US Senate says climate change is happening - no discussion.
Tuesday, 20 October 2009
Thursday, 8 October 2009
Wednesday, 7 October 2009
1492 - good and bad impacts
The exchange of diseases and vegetables in 1492 onwards: Alfred Cosby 1972 classic, plus updated review from Yale.
via Chris Blattmann
via Chris Blattmann
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