Genetically Altered Trees Eat Mercury

In an article in the journal "Nature Biotechnology" researchers saythey’re developing plants that clean up mercury contamination. TheGreat Lakes Radio Consortium’s Lester Graham reports:

Old Mercury Resurfacing

A study to be published this month shows mercury, deposited in riversas long as forty years ago, is still getting into the food chain andcausing environmental and human health problems. The Great Lakes RadioConsortium’s Stephanie Hemphill explains: