Administrator, IADS, USDA
"I appreciate…the hope Plan B communicates by pointing out so many things that are already being done around the globe." —Roland Saher, economics teacher on Plan B 4.0: Mobilizing to Save Civilization.
When assessing the adequacy of basic resources such as land or water over time, population is the universal denominator: as population expands, per capita availability shrinks.
The world population took until the start of the 19th century to reach 1 billion people. As population growth...