The U.S. Environmental Protection Agency lessened protections for crops and wildlife habitats after Monsanto supplied research that presented lower estimates of how far the weed killer dicamba can drift, according to a review of federal documents. In its final report approving the usage of dicamba on soybeans, the agency expressed confidence that dicamba, new versions of which are made by Monsanto and German chemical company BASF, would not leave the field. The registration covered both herbicides, an EPA spokesperson said. “The EPA expects that exposure will remain confined to the dicamba (DGA) treated field,” the agency wrote in the final registration approving the use of dicamba in November 2016. However, drift from dicamba damaged more than 3.6 million acres of soybeans in 2017, according to data from Kevin Bradley, a professor at the University of Missouri.