This week, we find out how to get useful gas from useless coal, and make money from waste carbon dioxide! Underground coal gasification could allow us to access huge amounts of energy in inaccessible coal seams. We find out how it works as well as exploring a new method for capturing waste carbon and turning it into useful chemicals. In the news, dinosaurs inspire new designs for aircraft, spotting a star being ripped apart by a black hole, and the South African bid for the world's biggest radio telescope. Plus, Diana asks what the point is of "junk" DNA?