For a quality debunking, I defer to Grist Magazine, who offers up real and actual scientists to talk about the matters Lomborg 'discusses.'
The only thing 'brave' about Bjorn Lomborg is his ability to take his retardation public.
You got a problem with that? Email me your arguments and our distinguished panel of science fans and citizens of earth will respond. And for Buddha's sake, get yourself some science, why don't you?
WEAPON OF MASS INSTRUCTION