NPR Story
10:00 am
Fri January 6, 2012

Parasitic Fly Threatens Honey Bee Populations

Honey bee colonies around the United States are in decline, threatened by several different diseases and parasites. John Hafernik, a professor of biology at San Francisco State University, describes how a parasitic fly that was thought to prey upon bumblebees may pose a new threat to honey bee populations in the U.S.