Bees are dropping dead in Brazil and sending a message to humans

Image of tractor spraying pesticides.

(Bloomberg) Around half a billion bees died in four of Brazil’s southern states in the year’s first months. The die-off highlights questions about the ocean of pesticides used in the country’s agriculture and whether chemicals are washing through the human food supply — even as the government considers permitting more. Most dead bees showed traces of Fipronil, a insecticide proscribed in the European Union and classified as a possible human carcinogen by the U.S. Environmental Protection Agency.