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http://online.wsj.com/article/SB10001424052748704895204575320883257186258.html


"Exact numbers on poison ivy's rise are hard to pin down, because so many cases go unreported. More than 350,000 people each year suffer from poison ivy, according to a 2006 study published in the Proceedings of the National Academy of Sciences. Other estimates go higher, especially if taking poison ivy's toxic cousins, poison sumac and Western poison oak, into account.

A regular victim of botanical abuse, WSJ's About the House columnist Wendy Bounds discusses home remedies for poison ivy.
.They all produce urushiol, a skin-irritating oil that combines with skin proteins to trigger the tell-tale allergic reaction—an angry red rash that itches badly enough to make a person miss a day or more of work or fun.

About 15% of the population is insensitive to urushiol and will never develop a reaction. For everyone else, repeated exposure tends to make the rash worse. "The dermatitis gets worse each subsequent time," says Dawn Davis, a dermatologist at Mayo Clinic in Rochester, Minn. On the other hand, a person's sensitivity tends to decline with age.

There's no shortage of theories on why poison ivy seems to be rising. Some veteran gardeners think the particularly brutal winter in many regions killed off many prized perennials and shrubs—leaving more room for weeds to flourish. Another theory: more novice gardeners are zealously digging out weeds to plant vegetable patches and making contact with poison ivy.

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Western poison oak
.A study, published in the journal Weed Science in 2007, suggested that poison ivy is getting bigger, spreading faster and producing more urushiol as the result of increasing levels of carbon dioxide in the atmosphere. Lewis Ziska, a plant physiologist at the U.S. Agriculture Department who led the study, exposed poison ivy plants to different carbon dioxide concentrations—mirroring those that actually existed in the atmosphere at various times over several decades. The increased exposure levels produced bigger, hardier, and more irritating plants.

Poison ivy makes for an unpredictable allergen that has no comfort zone. Geralyn Caplan, an Evansville, Ind., biology teacher, says through many years of camping as a child, she never caught poison ivy. But in each of the past three years, she says, "I got nailed with it." She has been spending more time out in the yard clearing flower beds now that her kids are grown. She recently recovered from her worst case ever, when rashes and welts spread on her arms and legs. ...

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OH my God, We are all going to die. I have lived around poison Ivy for 60 years. Its no worse than it was 25 years ago. and its a controllable plant. A little weed killer and poof its gone.
 

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If this isn't reason enough to pass cap and trade then I don't know what is.
 

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This can't be true. The left laughs at the experts who claim mild global warming will have a beneficial effect on agriculture, increasing the yield of farmland and the growing season. If those things are laughable, then why is it so believable that the same forces could enhance poison ivy growth?
 
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