We haven’t seen a quarter of known bee species since the 1990s
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.
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.
During the second half of the past century, a global agricultural boom led to habitat loss, while widespread use of pesticides killed off many plants bees rely on for food.
A sweeping analysis shows an overall downward trend in bee diversity worldwide, raising concerns about these crucial pollinators.www.nationalgeographic.com