CHICAGO (AP) -- Researchers for the first time have linked air pollution exposure before birth with lower IQ scores in childhood, bolstering evidence that smog may harm the developing brain.

WASHINGTON (AP) -- Irregular heartbeat. Prostate cancer. Back pain. Hearing loss. The government is about to spend millions to try to uncover the best treatments for scores of ailments -- and how to handle these four biggies leads a list of top 100 questions that doctors need answered.

(Associated Press) -- He was like millions of other consumers who sometimes take vitamins or echinacea, hoping to build up his immunity or ward off a cold. He figured alternative remedies were as safe as a spoonful of honey. But that notion washed away with one squirt of a homeopathic cold gel.

WASHINGTON (AP) - Consumers should stop using Zicam Cold Remedy nasal gel and related products because they can permanently damage the sense of smell, federal health regulators said Tuesday.

LOS ANGELES (AP) - Zapping away abnormal, precancerous cells in the throat may lower the risk of later developing esophageal cancer, the first major study to test this technique finds.