Bees feed us. Many of the 20,000 species pollinate 85 percent of food crops and fruits around the world—everything from garlic and grapefruits to coffee and kale.
But, it seems, these crucial insects aren’t doing very well. A study published today in the journal One Earth reveals that in recent decades, the number of bee species reported in the wild has declined globally. The sharpest decrease occurred between 2006 and 2015, with roughly 25 percent fewer species spotted—even as sightings by citizen scientists were increasing rapidly.