Unregulated, agricultural ammonia threatens U.S. national parks' ecology
Friday, October 11, 2013 - 13:50
in Earth & Climate
Thirty-eight U.S. national parks are experiencing “accidental fertilization” at or above a critical threshold for ecological damage, according to a new study. Unless significant controls on ammonia emissions are introduced at a national level, they say, little improvement is likely between now and 2050.