Itchier Poison Ivy Stems from Climate Change

Rising CO2 levels lead to bigger, stronger rash-causing weeds
By Dustin Lushing,  Newser Staff
Posted Jun 27, 2007 11:58 AM CDT
Itchier Poison Ivy Stems from Climate Change
POISON IVY(1 Of 2)   (Earth Life Forms)

(Newser) – Poison ivy is getting bigger and more potent, and the culprit is the 21st century's all-purpose scapegoat: climate change. The itchy, rash-inducing plant that has plagued hikers and gardeners since the beginning of time thrives in environments with high levels of CO2, the Journal reports, and with rates on the rise, the weed is growing like—well, a weed.

The three-headed scourge is also growing faster, with larger leaves and more powerful oil. A recent study exposing some plants to about the same level of CO2 as in the atmosphere in the 1950s and the some to the volume found today. After eight months, the "modern" poison ivy had larger leaves and higher levels of rash-creating oil. (Read more poison ivy stories.)

We use cookies. By Clicking "OK" or any content on this site, you agree to allow cookies to be placed. Read more in our privacy policy.
Get the news faster.
Tap to install our app.
X
Install the Newser News app
in two easy steps:
1. Tap in your navigation bar.
2. Tap to Add to Home Screen.

X