Only a complete simpleton would conclude that more CO2 means more food.


Farmed Out: How Will Climate Change Impact World Food Supplies?

A new study attempts to estimate the effects of climate change on global agriculture--and outline ways to mitigate its most dire consequences.

"the benefits of better plant growth, thanks to higher carbon dioxide concentrations (plants use CO2 for photosynthesis) are more than offset by the impact of higher temperatures and differing precipitation.

"If you grow a plant in a bell jar in a lab and increase the CO2 inside, the plants will perform better. [But] will those results translate into farmer's fields? Evidence that we've been getting from farmer's fields suggests perhaps not," Nelson says."


Source: Farmed Out: How Will Climate Change Impact World Food Supplies?: Scientific American