America's bee colonies are collapsing. It's a big mystery, with much at stake. Green websites like TreeHugger have been on the case since the phenomenon was brought to the media's attention in 2006.

For some background see:

Where Did the Bees Go?
The Bees Did It 3,000 Years Ago
Honey Bee Mystery Solved?
Colony Collapse Disorder Arrives in the UK
Bayer in the Dock Over Pesticide Linked to Colony Collapse