Midweek Must Read:Updated

Via Instapundit is this great piece in the Guardian about the evils of biofuels and converting food to fuel is actually worse for the environment than burning traditional fossil fuels. I have been saying this for a longtime now, ethanol and biofuels are a pipedream and an incredibley stupid shortsighted one at that.

In principle, burning biofuels merely releases the carbon the crops accumulated when growing. Even when you take into account the energy costs of harvesting, refining and transporting the fuel, they produce less net carbon than petroleum products. The law the British government passed a fortnight ago - by 2010, 5% of our road transport fuel must come from crops - will, it claims, save between 700,000 and 800,000 tonnes of carbon a year. It derives this figure by framing the question carefully. If you count only the immediate carbon costs of planting and processing biofuels, they appear to reduce greenhouse gases. When you look at the total impacts, you find they cause more warming than petroleum.

A recent study by the Nobel laureate Paul Crutzen shows that the official estimates have ignored the contribution of nitrogen fertilisers. They generate a greenhouse gas - nitrous oxide - that is 296 times as powerful as CO2. These emissions alone ensure that ethanol from maize causes between 0.9 and 1.5 times as much warming as petrol, while rapeseed oil (the source of more than 80% of the world's biodiesel) generates 1-1.7 times the impact of diesel. This is before you account for the changes in land use.

Update: Noel Sheppard at News Busters points to a John Stossel 20/20 segment on this same topic and Townhall article.