Cameron is endorsing and funding prop 23 in California which is a job and economy killing climate change law. Like Al Gore he is another creepy rich hypocrite.
If he knew anything about science he would know
Global Warming Climate Change is bogus and has been revealed as such. But the few remaining people still pushing it, politicians and rich assholes like Cameron, are doing so because they stand to gain if it gets pushed through. They have business interests tied to making everyone suffer more.