Bees take longer to learn floral odors polluted by vehicle fumes
Roadside pollution interferes with basics of foraging for nectar
![honeybee](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/10/100616_SM_honeybee_main.jpg?fit=860%2C460&ssl=1)
TRICKY SCENTS Honeybees usually learn floral scents quickly, but it’s harder for them when the fragrance of roadside flowers mixes with car exhaust.
Lesley Ingram, Bugwood.org (CC BY-NC 3.0 US)