During a United Nations climate conference, the US joined the Powering Past Coal Alliance. It includes more than 50 other countries that have committed to switch from “unabated coal power generation” to clean energy. But let’s keep it real. The word “unabated” changes everything. It means that power plants can continue to burn coal, the dirtiest fossil fuel, as long as they install unproven technologies designed to capture carbon dioxide emissions but not other air pollutants. Such technologies are expected to make electricity more expensive, and have already wasted hundreds of millions of dollars in federal funding in failed carbon capture projects. The US recently carved out a similar loop hole for carbon capture in its federal pollution standards for power plants.