Last year was the hottest year ever recorded. And yet, the latest figures show that in 2013 the source that provided the most new energy to the world economy wasn’t solar, wind power, or even natural gas or oil, but coal.

The growth in global emissions — from 1 percent a year in the 1990s to 3 percent so far this millennium — is striking. It’s an increase that’s paralleled our growing knowledge of the terrible consequences of fossil fuel usage.

Who’s driving us toward disaster? A radical answer would be the reliance of capitalists on the extraction and use of fossil energy. Some, however, would rather identify other culprits.