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* Running time: 12:55 * Aired: January 2008 Draft 85 * Description: Discusses how biofuels (such as ethanol) is not very cost efficient or environmentally friendly. How using corn for fuels affects the food supply of the world is also discussed. * Rating: Very Good * 7-Revolutions: Technology, Resources

* Aired: January 2009 * Running time: 5:27 * Description: Provides information about energy prices and ethanol. * Rating: Good. Used during a lecture on biofuels. * 7-Revolutions Section: Resources, Technology

The "green revolution" dramatically boosted crop yields throughout the world, but it also bred overconfidence and complacency. Now, global food stocks are too low, and food prices are too high (partly as a result of use of food for biofuels). The article talks about declining rates of increase in agricultural productivity as a result of reductions in investment in agricultural research.