I have been hearing a lot over the last year or so how the honey bees seem to be disappearing suddenly.  I hadn’t heard any reasons why this may be until now.  According to researchers from the University of Virginia, air pollution levels have climbed to a high enough level to impede the bee’s ability to follow the scent of flowers.  They found that the distance is cut by more than a fourth when pollution levels are high.  http://www.washingtonpost.com/wp-dyn/content/article/2008/05/04/AR2008050401737.html?hpid=topnews