The Agricultural Research Service (ARS) is the U.S. Department of Agriculture's chief scientific in-house research agency.| www.ars.usda.gov
Water hemlock| www.ars.usda.gov
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Ambrosia beetles tending to their fungus garden, a source of food for the larvae and adults.| www.ars.usda.gov
Read the magazine story to find out more.| www.ars.usda.gov