Human caused climate change is real- the scientific consensus is overwhelming. Only oil baron sponsored Koch Brothers Puppets, Wall Street Banksters and Libertarian Death Cultists still deny climate change.

For Libertarians its inconvenient because if you do accept human caused climate change, then there is no logical and ethical response which does not involve the need for collective and concerted government action. It is NOT an issue market forces can fix because the effects of fossil fuel use are not factored or controlled by any free market forces. The negative climate changing effects of fossil fuels upon the global climate are imposed on everyone, everywhere, indiscriminately.

With big oil lobby sponsored Trump abandoning Americas global leadership role, again, this will provide China with another opportunity to take a lead as the responsible global superpower. Climate denial extremism is part of the disease leading to the demise of US power.