Many people have heard of Ken Bone, the red-sweater-wearing undecided voter who stole the show at the second, town hall-style presidential debate. But few remember the question he asked. It was about the candidates’ energy policies, and the balance they must strike between protecting the environment and keeping energy prices low and millions of energy workers employed. It’s a question worth revisiting in these closing days of the campaign.

The U.S. is now the world’s largest producer of oil and natural gas, despite President Obama’s costly energy regulations. Hillary Clinton is campaigning for the presidency not by celebrating the shale extraction that has made us less dependent on energy from parts of the world hostile to America. Rather, she focuses on renewable energy, claiming that it can supply a third of electricity needs.