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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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Why Mount Rainier is the US volcano that troubles scientists most

By Katie Hunt, CNN (CNN) — The snowcapped peak of Mount Rainier, which towers 4.3 kilometers (2.7 miles) above sea level in Washington state, has not produced a significant volcanic eruption in the past 1,000 years. Yet, more than Hawaii’s bubbling lava fields or Yellowstone’s sprawling supervolcano, it’s Mount Rainier that has many US volcanologists worried. “Mount

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