Global Science Report is a feature from the Center for the Study of Science, where we highlight one or two important new items in the scientific literature or the popular media. For broader and more technical perspectives, consult our monthly “Current Wisdom.”
About a year ago, a major paper appeared in a high-profile scientific journal, Food and Chemical Toxicology, claiming a link between genetically modified corn and cancer in rats. The findings were published by a research team led by Gilles-Éric Séralini of the University of Caen in France. It was widely trumpeted by people opposed to genetically modified organisms (GMOs).
Simply put, making a GMO dramatically accelerates the normally slow process of traditional plant breeding, which takes many generations to stabilize some desired new trait in the plant genome, making the philosophical objections to it seem somewhat naïve.
While Séralini’s finding was heralded by anti-GMO activists as an “I told you so,” the paper was promptly, harshly, and widely criticized by geneticists and the general scientific community, many of whom lobbied the journal directly to address the shortcomings in the paper.
The most stinging criticism is going to sound painfully like what we see so often in environmental science, where researchers purposefully design an experiment likely to produce a desired results. Two months ago we documented a similar process that pretty much guaranteed that the chemical currently the darling of green enrages, bisphenyl-A, would “cause” cancer.
In Seralini’s case, the research team used a strain of rats with a known strong proclivity to develop cancer if left to age long enough, which is what they allowed, obeying the maxim that “if you let something get old enough, it will get cancer.”