. >> it begawith honeyes. in 2006, large numbers of worker bees began to abruptly disappear from honeybee colonies. since then, beekeepers have been losing 30% or more of their hives annually, losseshat are higher than normal. this phenomenon came to be called colony collapse disorder. new york state beekeeper jim doan saw it firsthand. >> i've worked in bees for now 46 years, and so i know what normal looks like, and what we've seen over the last 6 or 7 years is not normal. >> neybee ls has consuences f the ecomy. onthird ofood proded in the u.sdepends honeybe polination we are tting at rk seral hundd billiodollars productvery yea is significant because the cps that arpollinatedre some of them that really add diversity and vitality to our et. >> honeee loss have be linkedo multip factors ke pestides, hatat deadation,alnutritn, pathoge, and vaoa mite inftations. for pestide manufacturer bayer crop science, the issue is clear. >> mt expertagree th the single greatest threat to honeybee health is the varroa mi,