Like many a technophile, I suppose, I was hopeful for this project that was supposed to trap the carbon emitted when a really dirty source of energy was burned. If it worked, it would bring jobs to a part of Mississippi in need of a boost, it would provide reasonably priced energy, and it would emit no (or close to no) carbon.
Alas, it hasn't panned out. This writeup blames mismanagement; I suppose that means there may be some hope left for the technology, though that's not clear. The companion article covers the broader issues, including the economics, in a really short, clean way. Take a look.