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.
Lester Brown writes for Guardian.co.uk in "This will be the Arab world's next battle," regarding how population growth and water supply are on a collision course and how hunger is set to become the main issue. Posted April 22, 2011.