carbon dioxide

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New research concludes that the poorest people in the world will be affected the most by higher CO2 levels, which may decrease the nutritional quality of rice. This conclusion, however, is based on at least two flawed assumptions.
A history professor at the University of Michigan claimed that carbon dioxide is deadlier than Sarin gas. Although it seemed implausible to the Council's chief chemist, the prof's claim was even more false than we imagined. The things you learn.