Neil deGrasse Tyson, the TV astrophysicist perhaps best known for lecturing the world about a man-made climate change consensus, is the narrator of a new film that is being described as rank propaganda for Big GMO.

Food Evolution premieres in theaters across America on Jun 23 and purports to be an objective explication of the genetically engineered or modified food controversy, which is an issue that clean food advocates understandably take very seriously.

Although more reviews will be popping up in the coming weeks, more than 40 scholars and researchers who screened the film at the University of California, Berkeley, have signed a letter calling out Food Evolution as "a piece of propaganda."