Citrus, avocado kill Colombia bees

ANTIOQUIA: For the second time in two years, Gildardo Urrego is scooping up piles of dead bees after an invisible evil invaded his hives in northwest Colombia, wreaking havoc among his swarms.

Urrego has no proof, but he suspects the culprit is pesticides, which have been fueling a commercial avocado and citrus boom in the country.