A woman shows the four different varieties of corn produced in Betania, in the Yucatan peninsula, Mexico, Tuesday, Nov. 30, 2010. During the annual UN Climate Change Conference which is being held in ... more 
A woman shows the four different varieties of corn produced in Betania, in the Yucatan peninsula, Mexico, Tuesday, Nov. 30, 2010. During the annual UN Climate Change Conference which is being held in Cancun, Mexico, the World Meteorological Organization said Tuesday the heat waves that killed thousands of people in Europe in 2003 and that choked Russia earlier this year, will appear like an average summer in the future as the Earth continues to warm. less 
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Associated Press | Photo By Eduardo Verdugo
Tue, Nov 30, 2010 7:48 PM EST