Nature’s trickle-down remedy to water pollution
September 8, 2015
In a rain forest biome near Tucson, the water is caught and purified naturally.
CC BY 1.0 via Wikimedia commons Monitorius (Own work) [Public domain], via Wikimedia Commons
It often takes years before this water becomes part of the surface water again. During those years of trickling through layers of vegetation and earth, water is being “scrubbed clean.”