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.
Lecture at The Berkeley Institute of the Environment
April 18, 2007
First annual Distinguished Lecture, featuring Lester Brown, sponsored by The Berkeley Institute of the Environment. Watch the video on Google or UC Berkeley.