Map: Wild Bee Abundance Across the US (IMAGE) University of Vermont Caption The first national study to map US wild bees suggests they're disappearing in many of the country's most important farmlands. Relatively low abundances are shown here in yellow; higher abundances in blue. Credit PNAS Usage Restrictions with coverage of associated story License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.