Pesticides harming bees?

According to "Science" magazine, exposure to certain insecticides could be harming bees.  Five years ago, a mysterious condition called "colony collapse disorder" decimated honey bee colonies in parts of the U.S. There is new evidence that systemic insecticides, a common way to protect crops, indirectly harm bees.  In bumble bees, exposure to one such chemical leads to a dramatic loss of queens which could help explain the insects' decline. In honey bees, another insecticide interferes with the foragers' ability to find their way back to the hive. Researchers say these findings are cause for concern...  http://www.sciencemag.org/content/335/6076/1555

Photo by Alasam@http://www.lightstalking.com/bees