WASHINGTON (AP) - Swiss researchers tested honey samples from around the world and found that three-quarters of them had a common type of pesticide.
The scientists say the chemical is not near levels that would come close to harming humans, but it is a big worry for bees.
They tested about 200 samples and found 75 percent had at least one of five kinds of the insecticides called neonicotinoids (nee-oh-NIH'-kuh-tih-noyds), or neonics. They published the results Thursday in the journal Science.
Bees and other pollinators have been on the decline for more than a decade. Experts blame a combination of factors: the pesticide, parasites, disease, climate change and lack of a diverse food supply.
One outside expert says the study is too small to make any broad conclusions.