http://www.sacbee.com/2012/04/05/4392804/pesticide-epa-faulted-in-bee-die.html (http://www.sacbee.com/2012/04/05/4392804/pesticide-epa-faulted-in-bee-die.html)
Another good read
http://www.wired.com/wiredscience/2012/04/neonicotinoids-colony-collapse/ (http://www.wired.com/wiredscience/2012/04/neonicotinoids-colony-collapse/)