Another reason to worry about global warming: more and itchier poison ivy. The noxious vine grows faster and bigger as carbon dioxide levels in the atmosphere rise, researchers report Monday . . .Does that mean that global warming is good for other plants as well? Is that why they're called "greenhouse gasses"? Why didn't they do the study on tomatoes?
Compared to poison ivy grown in usual atmospheric conditions, those exposed to the extra-high carbon dioxide grew about three times larger - and produced more allergenic form of urushiol, scientists from Duke and Harvard University reported.
Tuesday, May 30, 2006