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.
"For years -- even decades -- Earth Policy Institute president and Grist contributor Lester Brown has issued Cassandra-like warnings about the global food system. His argument goes something like this: Global grain demand keeps rising, pushed up by population growth and the switch to more meat-heavy diets; but grain production can only rise so much, constrained by limited water and other resources. So, a food crisis is inevitable...Coming from a man who's been studying agricultural productivity since the 1960s, and who was in fact a booster of the original "Green Revolution" -- the push by U.S. policymakers and foundations to prod farmers in the global south to use "modern" agriculture technologies such as hybrid seeds, industrial fertilizers and pesticides, and heavy irrigation -- this is a significant statement," writes Tom Philpott, senior food and agriculture writer on Grist.org in a release titled 'The ‘food bubble’ is bursting, says Lester Brown, and biotech won’t save us.' Posted January 12, 2011.