World’s most-used weedkiller disrupts honeybee brains

Glyphosate was long thought to be safe for honeybees because they lack the enzyme the chemical targets in weeds. However, researchers found that exposed bees foraged 13 percent less after only three days and showed changes in brain chemicals linked to behavior. Across a whole hive, that decline could reduce honey production, weaken pollination, and threaten long-term survival. A Virginia Tech study found that glyphosate, a widely used herbicide, can interfere with honeybee foraging and may undermine the long-term stability of colonies. The research was supported by a grant from the National Institute of Food and Agricultur... [3805 chars]