ScienceDaily: Global warming is putting the squeeze on bumblebees. In the most comprehensive study ever conducted of the impacts of climate change on critical pollinators, scientists have discovered that global warming is rapidly shrinking the area where these bees are found in both North America and Europe. Researchers examined more than 420,000 historical and current records of many species of bumblebees--and confirm that bumblebees are in steep decline at a continental scale because of climate change. The...