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. > honeyb loss ha nsequenc for theconomy. one-thd of fooproducedn the.s. dends on heybee pollination. >> we arputting risk several hundred billion dollars of product every yr. it is siificant because the rops that e pollinated are some of them that really add diversity and vitality to our diet. honeybe lossesave been linked tmultipleactors, likpesticid, habita degradion, maltritn, phogensand varr mite nfestatis. for pesticide manufacturer bayer crop science, the issue is clear. >> most experts agree at the single greatest threat to honeybee health is the varroa mi, an invive bloosucking st thatoth direly parasitizes young and adult bees and vectors bee diseases. where varroa mites are absent or well controlled, honeybees are thriving. >> but jim says he knows why his bees are dying. >> we had a multitude of neonics that were showing up in our bees. it doesn't take much to kill a bee. >> neonicoti