Something to keep in mind: according to
Ernest Moniz, biofuels can deliver about 0.5 Watt per square metre of land planted with bio fuel crops. Considering that currently the world consumes about 12.9 terra watt from fossil fuels this implies that replacing fossil fuels with bio fuels requires about 26 million square km of land. That would correspond to about 1.3 times current arable land; i.e. even if stopped eating there is not enough land to support current energy needs, let alone future ones...
Labels: climate change