This is a turn up for the books.

Mark Lynas spent years destroying genetically modified crops in the name of the environment. Now he's told the world – and his fellow activists – that he was wrong.
Extract
"His embrace of evidence-based knowledge caused a problem. Many of his beliefs about GMOs were predicated on an extravagant dismissal of the scientific consensus. "The whole GM thing had been about criticising scientists, saying they were corrupt, corporate shills," he says. "And we definitely believed all those things. But I realised everything we were doing was deeply reductionist, basically saying: 'Scientists should shut down their labs and go and work in Tesco.' It was a kind of counter-enlightenment. People against a process."

Full article here
www.guardian.co.uk/[...]

His speech here.
www.marklynas.org/[...]