Monsanto’s Roundup Ready crops are engineered to be herbicide tolerant, specifically when sprayed with Roundup. Now that the World Health Organization’s cancer research arm has designated Roundup’s active ingredient, glyphosate, as “probably carcinogenic to humans,” consumers need to fully understand how the chemical works on plants and, in turn, impacts human health. For in-depth answers about glyphosate’s toxicity and more, we turned to molecular biologist and retired genetic engineer Thierry Vrain.
MOTHER Earth: When and why did you start researching glyphosate?
Thierry Vrain: I went to graduate school in North Carolina in the 1970s, where I was trained as a soil biologist — a nematologist, to be pre….