Did you know? A bicycle is a marvel of engineering efficiency, one where an investment in 22 pounds of metal and rubber boosts the efficiency of an individual mobility by a factor of three. On my bike I estimate that I get easily 7 miles per potato. For more information view the text and data in Chapter 6 of Plan B 4.0: Mobilizing to Save Civilization.
Lester Brown gives the inaugural address for the University of Maryland's Environmental Lecture series. The topic is his new book Full Planet, Empty Plates: The New Geopolitics of Food Scarcity.