Researchers point to things like the destruction of wild habitats, hunting and other increased challenges as the cause of the extinction. (relevantmagazine.com)
The die - off leaves fewer bees and weaker bees, who must work harder to produce honey in depleted wild habitats. (greenpeace.org)
Claire Kremen, a conservation biologist at the University of California, Berkeley (and Harmon - Threatt's mentor), has shown that the diversity of pollinators drops with increasing distance from wild habitat, as does the number of visits by wild bees to flowering crops. (scientificamerican.com)