All Stories
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PhysicsThe center of Earth is younger than the outer surface
Einstein’s general theory of relativity predicts the center of the Earth is two years younger than the crust.
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AstronomyYoung sun’s super solar flares helped set early Earth up for life
Super solar flares may have provided early Earth with planet-warming and life-building molecules.
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AnimalsFor baby sea turtles, it helps to have a lot of siblings
After hatching, baby sea turtles must dig themselves out of their nest. This requires less energy if there are lots of siblings, a new study finds.
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LifeScientists find way to break through bad bacteria’s defenses
Enzymes can break down bacterial biofilm’s sugary walls.
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ClimateZapping clouds with lasers could tweak planet’s temperature
Breaking up the ice particles inside cirrus clouds could make them reflect more light, turning them into a tool to combat global warming.
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Health & MedicineCDC tracking 279 U.S. pregnant women with possible Zika infections
The number of U.S. pregnant women with evidence of Zika infection has climbed to nearly 300, and includes both women with and without symptoms.
By Meghan Rosen -
AnimalsThese mystery mounds are actually giant piles of earthworm poop
The grassy mounds that dot a watery landscape in South America are created by giant earthworms, a new study finds.
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TechInsect-sized bot is first to both fly, land
A tiny aerial robot nicknamed RoboBee uses static electricity to perch on surfaces midflight. The landing device could one day help robots conserve energy during search and rescue missions.
By Meghan Rosen -
GeneticsRisk identified in procedure for ‘three-parent babies’
Resurgent mitochondria could spell trouble for disease therapy.
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NeuroscienceWiping out gut bacteria impairs brain
Antibiotics that wiped out gut bacteria curbed brain cell production in mice, a new study finds.
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GeneticsSome Stone Age humans ventured back to Africa
DNA from an ancient woman suggests some humans trekked back to Africa.
By Bruce Bower -
GeneticsSome Stone Age humans returned to Africa
DNA from an ancient woman suggests some humans trekked back to Africa.
By Bruce Bower