Vandana Shiva, Voice of the Anti-GMO Debate

The ambientalist and philosopher Vandana Shiva speaks during Fronteiras do Pensamento project at UFRGS on May 28, 2012 in Porto Alegre, Brazil.
( Alexandro Auler/LatinContent / Getty )

Produced by Jillian Weinberger and Ellen Frankman

Produced by PRI and WNYC