科学与环境
NASA's Perseverance Mars rover finds groundwater, lakes, and hot fluids in one place
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NASA’s Perseverance rover has uncovered a surprisingly complicated history of water in Jezero Crater. Scientists expected the crater’s Margin Unit to contain lake sediments, but instead found ancient igneous rocks that were altered by water on at least three separate occasions.
NASA’s Perseverance rover has uncovered a surprisingly complicated history of water in Jezero Crater. Scientists expected the crater’s Margin Unit to contain lake sediments, but instead found ancient igneous rocks that were altered by water on at least three separate occasions.
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The north pole of Mars is less dusty than scientists thought
Although Mars may have once resembled Earth, the rocky red planet now appears far from hospitable. Still, certain details—such as ice-bound water—pique researchers' curiosity. As on Earth, ice on Mars contains valuable records of past climate that could reveal whether the planet
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Quantum teleportation breakthrough: Scientists crack a 25-year entanglement challenge
Scientists have developed and experimentally demonstrated a long-sought method for identifying W states, an important form of multi-photon quantum entanglement. The technique could make complex entangled systems much easier to measure, opening new possibilities for quantum telepo
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Scientists expected these Galápagos sea turtles to wander. They stayed put
Yellow-morph green sea turtles in the Galápagos surprised scientists by staying remarkably close to home instead of making the long journeys typically associated with sea turtles. Satellite tracking showed that none left the marine reserve during the study, revealing just how imp
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Scientists found a surprising driver of Alzheimer’s outside the brain
Scientists found that immune cells contributing to Alzheimer’s-related brain damage may be activated in lymph nodes outside the brain before traveling into the nervous system. Blocking this pathway in mice dramatically reduced neurodegeneration and preserved cognitive abilities,
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Scientists say house cats could help unlock better cancer treatments for humans
Scientists have mapped the genetics of cat cancer on an unprecedented scale and found surprising similarities with tumors in humans. The findings could help bring precision cancer treatments to cats while also revealing new clues about how human cancers develop and respond to dru
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