The Strange Case of Homeopathy - Homeopathy defies the laws of science, rigorous studies show it works.

In 1994, NASA computer scientist Amy Lansky of Portola Valley, California, began wondering about her two-year-old son. Max knew the alphabet and could beat adults at memory games, but he barely spoke and, despite normal hearing, didn't seem to understand language. At preschool he was a loner. His main form of communication was poking people with his finger. Eventually, school officials urged Lansky to have him evaluated. The diagnosis: autism, a neurological and behavioral disorder for which there is no known remedy.

But Lansky refused to believe Max was untreatable. Her search for an answer led her to homeopathy, an 18th-century healing art now enjoying renewed popularity because of Americans' growing interest in alternative medicine. Homeopathy involves treating illnesses with such extreme dilutions of herbs, animal substances and chemical compounds that frequently not one molecule of the diluted substance is left in the solution. Homeopathy defies the known laws of science, not to mention common sense. But rigorous studies show it just may work.