Among all the worry about systemic pesticides and the possible impact they
could be having on bees, here's a report about bumble bees delivering
bio-control agents to the plant blossoms, eliminating some amount of
greenhouse spraying.

In this case, the bees wade in up to their armpits (ok, maybe "elbows") in
the "pesticide" to be delivered.

http://ca.news.yahoo.com/blogs/geekquinox/researchers-turn-honey-bees-more-e
ffective-pesticide-delivery-191548232.html
or
http://tinyurl.com/q3dbsul

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