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http://eatdrinkbetter.com/2011/02/23/climate-change-makes-food-less-safe/
If we could just lower CO2 back to 1895 levels, we could end the droughts and loss of livestock.
http://paperspast.natlib.govt.nz/cgi-bin/paperspast?a=d&d=FS18951122.2.9
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