The list of crops that simply won't grow without honey bees is a long one: Apples, cucumbers, broccoli, onions, pumpkins, carrots, avocados, almonds ... and it goes on.

Without bees to pollinate many of our favorite fruits and vegetables, the United States could lose $15 billion worth of crops -- not to mention what it would do to your diet.

Beekeepers first sounded the alarm about disappearing bees in 2006. Seemingly healthy bees were simply abandoning their hives in mass, never to return. Researchers call the mass disappearance Colony Collapse Disorder, and they estimate that nearly one-third of all honeybee colonies in the country have vanished.