Bayer Crop Science

Jennifer C. / flickr.com/photos/29638108@N06/7713775530

A Purdue University study has found a popular type of pesticide – found across nearly half the state -- can be lethal to honeybees. But a leading producer of the chemicals is striking back against those claims.

Neonicotinoid insecticides are used in planting corn crops, and the study says more than 94-percent of honey bees are at risk of exposure in the state.