% of world covered by forest 				30% 
Net total loss of forest 1990 - 2000 			94 million hectares 
% of the worlds fisheries requiring reduction or freezing of fishing	75% 
% of world's coastal ecosystems endangered by human activity 	Over 50% 
% of world's land lost to production by human activity 		25% 
# of wheat varieties used in China in 1949 			10,000
# of wheat varieties used in China in 1970 			1,000 
% of corn varieties lost in Mexico since 1930 		80% 
% loss of apple, cabbage, corn, tomato, pea varieties grown  	85-90% 
	in the United States since 1804

source: NOW with Bill Moyers on PBS  http://www.pbs.org/now/science/undiversity.html