Here's What Caused the New York City 'Zombie' Outbreak

An uncommon drug caused a "zombie" outbreak in a New York City neighborhood this past summer, and now a new report identifies the exact compound that the affected people took.The report also shows scientists how they could identify other such drugs in the future. The mass intoxication was caused by a type of synthetic marijuana, The New York Times reported at the time. It's not entirely clear why the drug, which was sold under the name "AK-47 24 Karat Gold," causes "zombie-like" symptoms, such a