> The data we have, which look at how plants would respond to the kind of CO2 concentrations we may see in our lifetimes, show these important minerals drop by

> The data we have, which look at how plants would respond to the kind of CO2 concentrations we may see in our lifetimes, show these important minerals drop by 8 percent, on average. The same conditions have been shown to drive down the protein content of C3 crops, in some cases significantly, with wheat and rice dropping 6 percent and 8 percent, respectively. I had the same gripe. 6%-8% change doesn't quite seem insignificant, but this is under CO2 concentrations that "we may see in our lifetime". So how much more CO2 were these plants exposed to than the controls, and how strong is that "may"?