Climate Change Is Making Poison Ivy Go Out of Control

Already poison ivy’s growth and potency has doubled since the 1960s, and it could double again once CO2 levels reach the 560 ppm mark, Lewis H. Ziska, a research weed ecologist with the U.S. Department of Agriculture, said.  ”In the last 50 years, the growth rate of poison ivy plant already has doubled.”

Climate Change Is Making Poison Ivy Go Out of Control