10 pages in length. The more contaminated man makes his planet, the more frantically he seeks ways to reverse the damage. Historically, toxic soil has been unearthed and redistributed into landfills; tainted sediment has continued to spill into bodies of water, kill the fish and sicken all who eat it; and polluted groundwater has all too often leeched its way into drinking supplies. In short, no method to liberate heavy-metal contamination has proven effective for eradicating its presence - until the discovery of phytoremediation, the process by which green plants are used to break down and/or absorb toxic substances in air, soil, sediment, sludge and groundwater. Bibliography lists 10 sources.