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PlantsThe most ancient African baobabs are dying and no one knows why
Scientists aren’t sure what’s killing the oldest African baobabs, nine of which have lost big chunks or died in the last 13 years.
By Susan Milius -
AstronomyMagnetic fields may be propping up the Pillars of Creation
Scientists made a map of the magnetic field within the Pillars of Creation, a star-forming area depicted in an iconic Hubble Space Telescope image.
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AstronomyIn 1968, scientists thought they were close to detecting gravity waves
Despite an unverified discovery in 1968, spacetime ripples remained elusive for nearly 50 years.
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AnimalsLeaf-cutter ants pick up the pace when they sense rain
Leaf-cutter ants struggle to carry wet leaves, so they run to avoid rain.