News
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Particle PhysicsPhysicists dream big with an idea for a particle collider on the moon
A lunar particle collider that dwarfs any such facility on Earth might not be impossible, according to new calculations.
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ArchaeologyNew clues suggest people reached the Americas around 30,000 years ago
Ancient rabbit bones from a Mexican rock-shelter point to humans arriving on the continent as much as 10,000 years earlier than often assumed.
By Bruce Bower -
NeuroscienceA deep look at a speck of human brain reveals never-before-seen quirks
Three-dimensional views of 50,000 cells from a woman’s brain yield one of the most detailed maps yet.
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AnimalsThe mere sight of illness may kick-start a canary’s immune system
Healthy canaries ramp up their immune systems when exposed to visibly sick birds, without actually being infected themselves.
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PhysicsAuroras form when electrons from space ride waves in Earth’s magnetic field
New lab results confirm that auroras are triggered by disturbances in Earth’s magnetic field called Alfvén waves.
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Health & MedicineFDA approved a new Alzheimer’s drug despite controversy over whether it works
A new Alzheimer's treatment slows progression of the disease, the drug’s developers say. But some researchers question its effectiveness.
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Health & MedicineFood that boosts gut microbes could be a new way to help malnourished kids
Malnourished children in Bangladesh fed a food aimed at restoring gut health grew more than those who got a traditional high-calorie supplement.
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PlantsThese ferns may be the first plants known to share work like ants
Staghorn ferns grow in massive colonies where individual plants contribute different jobs. This may make them “eusocial,” like ants or termites.
By Jake Buehler -
PhysicsNuclear clocks could outdo atomic clocks as the most precise timepieces
Better clocks could improve technologies that depend on them, such as GPS navigation, and help test fundamental ideas of physics.
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Health & MedicineAfter 40 years of AIDS, here’s why we still don’t have an HIV vaccine
The unique life cycle of HIV has posed major challenges for scientists in the search for an effective vaccine.
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PaleontologySomething mysteriously wiped out about 90 percent of sharks 19 million years ago
Deep sediments beneath the Pacific Ocean revealed a mystery: a massive shark die-off with no obvious cause.
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AnimalsNewly recognized tricks help elephants suck up huge amounts of water
New ultrasound imaging reveals what goes on inside a pachyderm’s trunk while feeding. It can snort water at the rate of 24 shower heads.
By Sid Perkins