Sudbury’s acid-damaged lakes have made a faster recovery than experts thought possible.  According to John Gunn, director of the Vale Living with Lakes Centre at Laurentian University, this is “proof positive that clean air produces clean water.” Since the U.S. Clean Air Act of 1990, a lot of research has been done on a national and international level on the recovery process of severely damaged lakes. Researchers have done a lot to investigate the different factors that go into that recovery. …Gunn and his team have also discovered that the recovering forest population has also positively impacted our bodies of water.  One of the reasons is that trees slow down the wind so the warm surface water doesn’t get mixed into the depths of the lake.  The forest also sheds leaves and branches around the lake. This debris creates what Gunn calls “forest tea” in the water.