In 1999, scientists dropped 45 tons of wollastonite over a 29-acre New Hampshire watershed to replace calcium lost to acid rain; by 2013, it was exporting 30 times more inorganic nitrogen than nearby watersheds
In 1999, scientists dropped 45 tons of wollastonite over a 29-acre New Hampshire watershed A large-scale effort to restore an American forest damaged by acid rain had an unexpected environmental effect when added nutrients caused a huge increase in nitrogen flowing into nearby streams. In October and November 1999, researchers spread about 45 short tons…