"Support" implies that the it's a good idea to be be pursued, contrasted with "once thought outlandish" (it's still outlandish, but possibly less worse than the

"Support" implies that the it's a good idea to be be pursued, contrasted with "once thought outlandish" (it's still outlandish, but possibly less worse than the alternative) in the clickbait headline. The content of the article suggests that scientists have concerns about the long-term effects and that we need more research so we better know our options, and that it's no substitute for reducing carbon in the atmosphere, not that it's a good idea that just needs development of a solution.