All Stories
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CosmologyHow to make gravitational waves ‘sing’
A rapidly spinning black hole would make a unique pattern of gravitational waves when it sucks in a smaller companion.
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AstronomyTo find ET, look at who’s (maybe) looking at us
To listen for aliens, two astronomers suggest that we focus on stars whose inhabitants can see Earth periodically cross in front of our sun.
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AnimalsCave-dwelling salamander comes pigmented and pale
Something’s funny in the family tree of pale, slinky cave salamanders.
By Susan Milius -
AnthropologyBelize cave was Maya child sacrifice site
Bones in Central American cave suggest many Maya sacrificial victims were children.
By Bruce Bower -
HumansPieces of Homo naledi story continue to puzzle
Researchers defend Homo naledi as a new hominid species and debate how it reached an underground cave.
By Bruce Bower -
CosmologyNew sky map charts previously unknown gamma-ray sources
A new map of the sky from the High-Altitude Water Cherenkov Observatory charts the cosmic origins of high-energy photons.
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Planetary ScienceHow alien can a planet be and still support life?
Geoscientists imagine the unearthly mechanisms that could keep alien planets habitable.
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AstronomyNew telescopes will search for signs of life on distant planets
Researchers are coming up with creative ways to pick up biosignatures in far-away planetary atmospheres.
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Quantum PhysicsInformation is physical, even in quantum systems, study suggests
A thermodynamic principle says that deleting information generates heat, and now, scientists say that goes for quantum systems, too.
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Health & MedicineClusters of cancer cells get around by moving single file
Clusters of cancer cells squeeze through thin blood vessels by aligning single file.
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SpaceWill we know extraterrestrial life when we see it?
Desert varnish and certain minerals hint that life — here and elsewhere — may defy current criteria.
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AnimalsScientists find a crab party deep in the ocean
A trip to check out the biodiversity off the coast of Panama revealed thousands of crabs swarming on the seafloor.