Environmentalists are terrified of a Trump presidency. So are climate campaigners. But some observers say Trump’s peculiar campaign promises — and in particular, his pledge to help rescue the ailing coal industry — could, ironically, help to deliver one of the key missing pieces that researchers say is needed to fix climate change. That piece is called “carbon capture and storage,” or for short, CCS. It actually refers to a nascent bevy of technologies that would allow for the stripping of carbon dioxide from various industrial processes, ranging from steel manufacturing to coal burning, and then sequestering it beneath the ground. In many cases, the pure streams of carbon dioxide can actually be used to help push more oil out of the earth in a procedure called “enhanced oil recovery,” potentially improving the economic value of the entire process. “If coal is to have a future, it needs to have CCS,” said Bob Inglis, a former Republican congressman who has tried to convince fellow conservatives that climate change is the real thing.