A New Can Of Worms links to Jonathan Rauch 's Will Frankenfood Save the Planet?

The trade-offs are fundamental. Organic farming, for example, uses no artificial fertilizer, but it does use a lot of manure, which can pollute water and contaminate food. Traditional farmers may use less herbicide, but they also do more ploughing, with all the ensuing environmental complications. Low-input agriculture uses fewer chemicals but more land. The point is not that farming is an environmental crime--it is not--but that there is no escaping the pressure it puts on the planet....

For reasons having more to do with politics than with logic, the modern environmental movement was to a large extent founded on suspicion of markets and artificial substances. Markets exploit the earth; chemicals poison it. Biotech touches both hot buttons. It is being pushed forward by greedy corporations, and it seems to be the very epitome of the unnatural.