What's killing off the bees?

On a recent episode of Real Time with Bill Maher, I heard about a new problem our farmers are facing, which is a dying off of honeybees, a major pollinator for many crops. I came across this article on Discovery.com that I thought I'd share. Funny that I haven't heard any stories on the news about this one. No, instead I hear all about Paris Hilton going to jail. Gotta love the media.
http://dsc.discovery.com/news/2007/05/03/bees_ani.html?category=animals&guid=20070503103030