Remember clean coal, vaunted savior of, um, coal? Turns out cost, unproven technology, and rising opposition to carbon emissions are conspiring to nip a lot of clean coal projects in the bud. This, of course, is just the latest piece of evidence that coal can’t hack it in a carbon-constrained market needs more subsidies.
![](https://grist.org/wp-content/uploads/2007/11/thermostat_h2001.jpg?quality=75&strip=all&w=200)