All Stories
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Science & SocietyRetractions: Righting the wrongs of science
Retractions let scientific journals remove bogus studies from the record. It's part of a self-correction process that helps move science forward.
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Science & SocietyWhen a study can’t be replicated
Many factors can prevent one study from matching another in all regards, including its findings. Those factors may have nothing to do with mischief.
By Janet Raloff -
Health & MedicineSurvey finds U.S. schools start ‘too early’
The school bell dings too early for U.S. tweens and teens, a survey finds. Most kids start class well before the recommended 8:30 a.m.
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PlanetsLike Tatooine in ‘Star Wars,’ this planet has two suns
Scientists have found the tenth planet with two suns. Such planets might be more common than single-sun planets, like our own, a new survey suggests.
By Ilima Loomis -
Health & MedicineMore data link vaping to smoking
A new study finds vapers who don’t smoke are likely to start — even when they initially had no intention of ever taking up a cigarette.
By Janet Raloff -
PhysicsScientists Say: Viscosity
We know some liquids are thick and some are thin. This week’s word describes the property of these liquids to resist tension or pressure.
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AnimalsChikungunya wings its way north — on mosquitoes
A mosquito-borne virus once found only in the tropics has adapted to survive in mosquitoes in cooler places, such as Europe and North America.
By Nathan Seppa -
PhysicsStephen Hawking says his group has solved a black hole puzzle
Physicist Stephen Hawking says light sliding along the outside of a black hole holds the key to understanding what’s inside.
By Andrew Grant -
AnimalsBoa constrictors stop their victims’ hearts
It’s a myth that boa constrictors kill by suffocation. A new study shows the snakes actually squeeze off blood flow, stopping the hearts of their prey.
By Susan Milius -
AgriculturePlant ‘vampires’ lay in wait
A new study shows how some parasitic plants evolved the ability to sense a potential host — and then send out root-like structures to feed on them.
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Health & MedicineNews Brief: Stress may break diet willpower
A new study suggests stress can affect our behavior — and willpower — by making tasty foods look more irresistible.
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PhysicsScientists Say: Torque
Some forces pull and some push. This force produces turning or twisting.