Almost a third of global food production needs animal pollination to reproduce. Honey bees are one of the most important pollinators; they are responsible for a $15 billion increase in crop value every year.
But some regions have been losing honey bee colonies to Colony Collapse Disorder (CCD).
According to USDA's Agricultural Research Service, CCD was first noticed in 2006 when some beekeepers reported on losing 30 to 90 percent of their hives.
The House Ag Subcommittee on Horticulture, Research, Biotechnology and Foreign Agriculture held a public hearing on this topic on Tuesday to review current research. Though there is no known reason for CCD, scientists are looking in four general categories: pathogens, parasites, management stressors, and environmental stressors.