Climate stress can give bumblebees asymmetrical wings, study finds

Bees may be in for rough time' over 21st century as hotter and wetter conditions affect development

Bumblebees have become increasingly stressed by changes in climate over the past century, researchers examining museum specimens have found.

Bees develop asymmetrical wings when they experience stress during development, and by examining a series of preserved specimens and their dates, the scientists found bees showed higher levels of wing asymmetry in hotter and wetter years.