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.
In late October, the Harvard Crimson sat down with Lester Brown, who was at Harvard to give several talks on sustainability. The author of more than 50 environmental books, including World on the Edge and Full Planet, Empty Plates, Brown has been a vocal advocate for environmental sustainability, even going so far as to call for “war-time mobilization” in order to save the planet. Check out the full interview here.