“It is inevitable that we will exit the fossil fuels era, because at some point we will simply run out of carbon to mine or burn,” Musk said. “So the question is really when do we exit the era, not if. The goal is to exit the era as quickly as possible.”
A carbon tax could take several forms, including a scheme to cap and trade emissions, such as those that exist in the EU and California; or a straightforward payment for emissions, such as that which Australia introduced and then repealed.
Sourced through Scoop.it from: qz.com