The push to embrace biofuels to curb Co2 emissions are already a big cause of famine. This is why we need to really crunch those numbers and ask ourselves if the sacrifice is worth it. Have you looked into how many degrees of temperature we can save over the next 100 years if we radically inhibit Co2 production at the expense of the human race? Doing a cost benefit analysis on this is very important if our species is to survive.