Originally Posted by HardyWeinberg

I don't have a really high regard for Pimentel's methodology. Every year he gets a bunch of beginning grad students and higher-up undergrads together for a seminar to mine coefficients of whatever from the literature to calculate why something or other isn't feasible and he gets them all published in Science but doesn't really ever advance much.

David Tilman has a more proactive approach to biofuel based on actual data collection and experimentation, generating something that is both useful and productive, if lacking large lobbyist support: