How To Lie While Telling the Truth
18th December 2015
David Friedman turns over a ‘progressive’ rock.
It has long been known that increasing the concentration of CO2 increases the yield of C3 plants, including most crop species. The usual estimate is that doubling CO2 concentration, roughly what is projected for the end of this century, increases yield by 30% or more. This is an inconvenient fact for people who want to argue that AGW will reduce food supplies. Clearly what they need is a scientific article to cite, proving that CO2 is actually a bad thing for crops.
And they have one, in Nature no less: Increasing CO2 threatens human nutrition.
…
If, with a doubling of CO2 (the abstract does not say what concentration was used in the experiments), crop yield goes up by 30% but the concentration of two minerals goes slightly down and the yield of protein only increases by 24%, that is a “threat to human nutrition.”
A striking example of propaganda disguised as science.