A competition to develop carbon-removal technology that is run by XPRIZE and backed by money from Elon Musk has announced 20 finalists. A winner will be announced next year
After the spectacular success of the first-ever “Marscopter,” mission planners have soaring ambitions for follow-up flying machines
Large stores of natural hydrogen have turned up in Albania, France and Mali
A decade after Congress told the FDA to expedite the approval of more effective sunscreens, the federal government still has not approved sunscreen ingredients that are safely being used around the world
Astronomy’s future may be slipping away—one climate disaster at a time
