The good news, engineers at Northwestern University now report, is
that even in heavily lead-tainted dirt, most of the metal usually
becomes trapped in the parts of plants that few people eat, such as
roots and stems. Indeed, the new data indicate that intentionally using
inedible plants to sop up lead could prove a low-cost strategy for
detoxifying backyards and school grounds, making them safer for
children.
Mike Elvin
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