How can humans be safe if we are now eating more herbicides (since more can be applied with Round-up ready GMO crops)? Why did the EPA raise the limit *now*?
http://www.cornucopia.org/2013/06/epa-raised-residue-limits-of-monsantos-glyphosate-herbicide/

My perspective: I am scientist in the agricultural field (MSc in Ag Engineering if that matters). I know from the literature that herbicides, fungicides and pesticides, such as Roundup, can be harmful to humans, insects, invertebrates and soil microbes. Although the plant might be safe to eat, the ecosystem that supports agriculture is harmed and residues may remain *on* the plant.

Expert response from David Shaw

Giles Distinguished Professor of Weed Science at Mississippi State University

Tuesday, 06/08/2013 17:04

EEPA and FDA require exhaustive data to support the proven safety of any pesticide not only to humans, but also to the environment.  This includes data on wildlife and other non-target organisms.  The active ingredient in Roundup, glyphosate, has been repeatedly demonstrated to be extraordinarily safe to humans and other animals.  It has a mechanism of action that targets an enzyme system that is not present in humans and animals.  With regard to the new use of Roundup in GM crops, extensive data were submitted that demonstrated the safety of glyphosate.