Watch the full episode of PBS Nature's Silence of the Bees, which looks at a recent phenomenon dubbed Colony Collapse Disorder (CCD).

In the winter of 2006, millions of bees vanished from their hives without a trace. The epidemic set researchers scrambling to discover why honeybees were dying in record numbers -- and to stop the epidemic in its tracks before it spread further.

NATURE investigates the sometimes exasperating efforts of people and wild animals to adapt to each other when their worlds collide.