From the CO2Science Archive: We’ve written a number of times about individual studies looking at the response of rice plants to elevated atmospheric CO2 levels. Now we turn to the CO2Science summary page showing photosynthesis responses to higher CO2 levels for this essential food crop. The news is good. From 1992 to 2009 there were 86 experiments showing an average gain of 44.9% for a 300 ppm increase in CO2, 10 experiments showing a 66% gain for 600 ppm and 1 study reporting a 56% gain for a 900 ppm increase. So fill up your bowls and pass the soy sauce, there’s rice on the menu under rising CO2 levels.