WP Article: Ethanol's Failed Promise

Good article published today by WP and written by Lester Brown and Jonathan Lewis about the urgent need to reevaluate the US policies towards biofuels, specially corn ethanol.It would be interesting to see a similar analysis with sugar cane ethanol and its impact in world prices; does this efficient way to produce energy outweighs its effect on the world food prices?..By Lester Brown and Jonathan