Nature World: Bee populations have taken a hard hit, and it appears humans are to blame for the recent decline. Researchers from the Universities of Exeter and California, Berkeley, have discovered that a deadly bee disease that originated in European populations has spread worldwide as the result of importing infected honeybees.
What's worse: bee colonies are suffering from what researchers call a "double blow." The dreaded Deformed Wing Virus paired with Varroa destructor mites, which feed on bee larva, has...