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Boeing Starliner spacecraft could wait months before return, but officials say astronauts aren’t stranded

By Jackie Wattles, CNN (CNN) — More than three weeks into a mission that was initially projected to last only days, the two astronauts piloting the inaugural crewed test flight of Boeing’s Starliner spacecraft do not know when they will return home. Officials have repeatedly indicated that the Starliner — which encountered issues with helium

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Scientists identify new Antarctic ice sheet ‘tipping point,’ warning future sea level rise may be underestimated

By Laura Paddison, CNN (CNN) — The Antarctic ice sheet is melting in a new, worrying way that scientific models used to project future sea level rise have not taken into account, suggesting current projections could be significantly underestimating the problem, according to a new study. Scientists from the British Antarctic Survey found that warm ocean water

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A weird sea creature was anatomically unlike anything ever seen — flipping it around led to a revelation

By Mindy Weisberger, CNN (CNN) — An extinct ribbonlike sea creature about the size of a human thumb was one of the earliest animals to evolve a precursor of a backbone. Scientists recently identified the animal’s nerve cord by using a topsy-turvy twist. They turned its fossils upside down. Paleontologist Charles Doolittle Wolcott first encountered fossils of

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