Anyone who's been stung by a bee knows they can inflict an outsized pain for such tiny insects. It makes a strange kind of sense, then, that their demise would create an outsized problem for the food system by placing the more than 70 crops they pollinate -- from almonds to apples to blueberries -- in peril.

Although news about Colony Collapse Disorder (CCD) has died down, commercial beekeepers have seen average population losses of about 30 percent each year since 2006, said Paul Towers, of the Pesticide Action Network. Towers was one of the organizers of a conference that brought together beekeepers and environmental groups this week to tackle the challenges facing the beekeeping industry and the agricultural economy by proxy.

"We are inching our way toward a critical tipping point," said Steve Ellis, secretary of the National Honey Bee Advisory Board (NHBAB) and a beekeeper for 35 years. Last year he had so many abnormal bee die-offs that he'll qualify for disaster relief from the U.S. Department of Agriculture (USDA).

In addition to continued reports of CCD -- a still somewhat mysterious phenomenon in which entire bee colonies literally disappear, alien-abduction style, leaving not even their dead bodies behind -- bee populations are suffering poor health in general, and experiencing shorter life spans and diminished vitality. And while parasites, pathogens, and habitat loss can deal blows to bee health, research increasingly points to pesticides as the primary culprit.

"In the industry we believe pesticides play an important role in what's going on," said Dave Hackenberg, co-chair of the NHBAB and a beekeeper in Pennsylvania.