ALLERGIES GO AMOK

摘要

If you're sneezing, coughing, or wiping your nose as you read this, chances are you're one of the 40 million Americans who are allergic to pollen. And if you have the impression that your hay fever is worse than it used to be, you're right. And it's likely to get worse still. In northern latitudes, global warming has extended the pollen season by as many as 27 days, giving spores from trees, grass, and weeds extra time to irritate your nasal passages, clog your lungs, and dull your brain.