In this July 5, 2011 file photo, a bumblebee alights on the bloom of a thistle in Berlin, Vt. Increasingly sick domesticated honeybee populations are infecting the world's wild bumblebees, a new study in the journal Nature finds.
It's a problem because wild bees, which are doing far worse than their managed cousins, handle a big chunk of pollination for food, such as coffee, tomatoes and blueberries. (AP Photo/Toby Talbot, File)
