Neonicotinoids May Be Responsible Bee Deaths 

Are Toxins Killing The Bees?
Al Meyerhoff, Hartford Courant (USA), 8/4/2008
http://apitherapy.blogspot.com/2008/08/neonicotinoids-may-be-responsible-bee.html

It's likely that most people have never heard of Gaucho. And no, it's
not a South American cowboy. I'm talking about a pesticide.

There is increasing reason to believe that Gaucho and other members of a
family of highly toxic chemicals — neonicotinoids — may be
responsible for the deaths of billions of honeybees worldwide. Some
scientists believe that these pesticides, which are applied to seeds,
travel systemically through the plant and leave residues that
contaminate the pollen, resulting in bee death or paralysis… 

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