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.
Scott Thill interviews Lester Brown in the article 'Time for Plan B: Our Civilization is on the Edge of a Systemic Breakdown' for AlterNet. Posted March 26, 2011.