Did you know? The heat in the upper six miles of the earth’s crust contains 50,000 times much as energy as found in all the world’s oil and gas reserves combined. Despite this abundance, only 10,500 megawatts of geothermal generating capacity have been harnessed worldwide. For more information view the text and data in Chapter 5 of Plan B 4.0: Mobilizing to Save Civilization.
Youtube clip of interview of Lester Brown by Washington Novaes, José Eli da Veiga, Ricardo Voltolini, and Marta San Juan France on Brazil's Roda Viva TV Cultura. Presented by Laila Dawa. Date: October 22, 2009.