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Bees are under stress- and we rely on them for our food
A bumble bee on a thistle flower Source: Getty / pskeltonphoto/Getty Images
Museum collections of bees show that they are increasingly stressed by climate changes, according to a new study published by scientists from Imperial College London and the Natural History Museum. Researchers took photos of thousands of bumblebees to study the evolution of their shape during the 20th century.
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