Poison Ivy Growing Faster, More Virulent

from National Public Radio

Lewis Ziska, plant physiologist for the U.S. Department of Agriculture's agricultural research service, says rising carbon dioxide levels and forest disruption are making poison ivy spread faster, grow larger, show up in new places and become more toxic. He tells host Michele Norris what makes the plant uniquely affected and how to treat skin that's been exposed.

Broadcast Dates

• All Things Considered, July 20, 2010