The Tesla and SpaceX CEO tweeted that he is donating US$100 million “towards a prize for best carbon capture technology.” (The Logic)

Talking point: It’s not yet clear if the money is going to an existing prize or what the criteria will be. Musk plans to announce details next week, according to a follow-up tweet. Musk has responded to one pitch so far, where someone asked him if a Sabatier reactor would count. “It’s a good path for fully renewable rocket energy, so solves part of the problem,” Musk wrote back, in part. His previous commentary indicates he’s interested in lowering the price of direct-air carbon capture to help make synthetic rocket fuel, rather than continuing to use fossil fuels. Squamish, B.C.-based Carbon Engineering is one of at least three startups that has built a working pilot plant for carbon capture.