Part 81 (1/2)

355 expensive liability instead of a valued a.s.set

Ibid., p. 78.

356 nontoxic manure as fertilizer and a three-year crop rotation

Mark Bittman, ”A Simple Fix for Farming,” New York Times, October 19, 2012.

357 virtually all of the nitrogen is derived

U.S. Government Accountability Office, ”Domestic Nitrogen Fertilizer Depends On Natural Gas Availability and Prices,” 2003, p. 1,

358 use per acre has been increasing dramatically

Jeremy Grantham, ”Time to Wake Up: Days of Abundant Resources and Falling Prices Are Over Forever,” GMO Quarterly Letter, April 2011.

359 devoid of life, which are growing in several ocean regions

Robert Diaz and Rutger Rosenberg, ”Spreading Dead Zones and Consequences for Marine Ecosystems,” Science, April 15, 2008.

360 recent spectacular algae blooms in Chinese

”No Easy Fix,” Economist.

361 U.S., China, Southeast Asia, and parts of Latin America

”Nitrogen Pollution an Increasing Problem Globally,” PRI's The World, January 27, 2009, /stories/science/environment/nitrogen-pollution-an-increasing-problem-globally-8166.html.

362 tripled the depletion of phosphorus from cropland

David Vaccari, ”Phosphorus: A Looming Crisis,” Scientific American, June 2009.

363 where 65 percent of U.S. production now takes place