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SpaceReading ripples in the cosmic microwave background
Researchers analyzing the wiggles imprinted on the cosmic microwave background, the radiation leftover from the Big Bang, have now demonstrated that those wiggles can be used to find the fingerprints of dark energy.
By Ron Cowen -
PhysicsSuperglass could be new state of matter
Simulations of helium-4 show that a superglass, in which atoms flow without friction, is possible.
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Health & MedicineIn the brain, justice is served from many parts
Imaging study reveals variation in brain activity depending on the severity of punishment a person decides.
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AnimalsDolphins wield tools of the sea
A long-term study of dolphins living off Australia’s coast finds that a small number of them, mostly females, frequently use sea sponges to forage for fish on the ocean floor.