Another questioner asked [Bjorn Lomborg], why did he choose a conservative think-tank like Heritage to show the movie in DC? His answer: because they were willing to do it. He said he regretted the missing centre in the debate. People interested in the subject tended to see climate change either as a hoax or as an immediate existential threat to civilization. ‘The constituency we have to grow is the intelligent middle,’ he said — people interested in level-headed, cost-effective solutions.