Ran into an old friend over the weekend, who commented that archaeology could do more discussing of the past history of climate change. Here's an example of what happens when the world gets hotter and dryer:
Explore Archaeology
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There was a recent edition of the Material World on Radio 4 recent which looks at human evolution and climate change, which you can listen to via RealPlayer.
http://www.bbc.co.uk/radio4/science/thematerialworld_20070405.shtml
There’s also William Ruddiman’s recent book Plows, Plagues, and Petroleum, which discusses argues that Global Warming can be tracked in the archaeological record. It’s controversial but well-written. There’s a radio programme on that too, Frontiers, also on Radio 4.
http://www.bbc.co.uk/radio4/science/frontiers_20060531.shtml
An excellent suggestion!