The E.P.A. currently does not classify glyphosate, the active ingredient in certain formulations of Roundup, as a carcinogen, even though the W.H.O. found that the herbicide was “probably carcinogenic” in 2015.
Rachael Ray and other food celebrities are speaking up in defense of nonstick pans. The actor Mark Ruffalo, who starred in a movie about the risky chemicals, is criticizing them.