Climate Fact: Prolific Poision Ivy
Atmospheric carbon dioxide (CO2) levels have doubled since pre-industrial times. When CO2 levels are high, poison ivy plants grow faster and produce more urushiol – the chemical notorious for causing rashes and other allergic reactions. Every year, more than 350,000 American develop rashes from contact with this plant.
Seasons: Spring, Summer
(Source: Mohan et al. 2006. Proc. Nat. Acad. Sci. 103(24): 9086-9089 http://www.dec.state.ny.us/website/hudson/hvcc1125dww.pdf)
