Map of US Wild Bees: 139 Counties at Risk (IMAGE)

University of Vermont

Map of US Wild Bees: 139 Counties at Risk

Caption

A new study of wild bees identifies 139 counties in key agricultural regions of California, the Pacific Northwest, the Midwest, west Texas and the Mississippi River valley that face a worrisome mismatch between falling wild bee supply and rising crop pollination demand.

Credit

PNAS

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