On issues ranging from genetically modified crops to nuclear power, environmentalists are increasingly refusing to listen to scientific arguments that challenge standard green positions. This approach risks weakening the environmental movement and empowering climate contrarians... I [Pearce] am deeply concerned about the power of business over the world’s seeds and food supply. But GM crops are an insignificant part of that control, which is based on money and control of trading networks. Clearly there are issues about gene pollution, though research suggesting there is a problem is still very thin. Let’s do the research, rather than trash the test fields, which has been the default response of groups such as Greenpeace, particularly in my home country of Britain. As for the Frankenfoods argument, the evidence is just not there. As the British former campaigner against GMs, Mark Lynas, points out: “Hundreds of millions of people have eaten GM-originated food without a single substantiated case of any harm done whatsoever.” ... Stewart Brand wrote in his 2009 book Whole Earth Discipline: “I dare say the environmental movement has done more harm with its opposition to genetic engineering than any other thing we’ve been wrong about.” He will see nods of ascent from members of a nascent “green genes” movement — among them environmentalist scientists, such as Pamela Ronald of the University of California at Davis — who say GM crops can advance the cause of sustainable agriculture by improving resilience to changing climate and reducing applications of agrochemicals. Yet such people are routinely condemned as apologists for an industrial conspiracy to poison the world. Thus, Greenpeace in East Asia claims that children eating nutrient-fortified GM “golden rice” are being used as “guinea pigs.” And its UK Web site’s introduction to its global campaigns says, “The introduction of genetically modified food and crops has been a disaster, posing a serious threat to biodiversity and our own health.” Where, ask their critics, is the evidence for such claims?