Officials with Oakland-Calif.-based Haagen-Dazs ice cream have taken up the cause of the disappearing honey bees and testified before Congress this week about the grim prognosis.

Beginning in 2006, bees began mysteriously disappearing from hives. In that year alone, beekeepers reported that about a third of their hives died as bees left and never returned. Even more died during the 2007 winter.

Researchers still don't know the cause of what they've dubbed colony collapse disorder.

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