National Public Radio: There's new evidence that wild bees, some of nature's most industrious pollinators of wildflowers and crops, are getting squeezed by our planet's changing climate.
The evidence comes from a century of bee observations, carried out across North America and Europe. Biologist Jeremy Kerr, at the University of Ottawa, decided to look specifically at sightings of bumblebees. These are the big, fuzzy bees that live wild, not the honeybees that beekeepers manage. There are dozens of different bumblebee...