Yale Environment 360: Honeybees in the United States are dying at a rate too high to ensure their long-term survival, according to a new report from the U.S. Department of Agriculture (USDA). Over the past winter a season when honeybee hives are most vulnerable the U.S. lost 23.2 percent of its hive honeybee population. That is lower than the previous winter's 30.5 percent death rate, but the cumulative impact on honeybee populations over the past eight years poses a major threat to their long-term survival, as well...