All Stories
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Planetary ScienceIcy planetoid found lurking at edge of solar system
Astronomers discovered an icy planetoid orbiting beyond the edge of the Kuiper belt.
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AnimalsSkewed gender ratios turn bird world into a soap opera
Infidelity, divorce and polygamy become more common among birds when one sex is rarer and has more choice in partners.
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NeuroscienceScans suggest how the mind solves ethical dilemmas
Brain scans suggest how the mind solves a moral dilemma.
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LifeWhen hummingbirds fly unfriendly skies
Hummingbirds hover easily in turbulent air as long as the disturbances aren’t too wide.
By Susan Milius -
EnvironmentArtists’ sunsets may reveal past pollution
The colors artists used in the sunsets of their paintings may provide clues to what was circulating in the air hundreds of years ago.
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AstronomyZoom in on amazing detail in NASA moon map
An interactive mosaic of images from the Lunar Reconnaissance Orbiter lets you fly over the Moon’s north pole with unprecedented detail.
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Health & MedicineEarly treatment may stave off esophageal cancer
Zapping precancerous tissue in patients with Barrett’s esophagus might reduce incidence of cancer.
By Nathan Seppa -
Health & MedicineTelling kids lies may teach them to lie
In a new study, kids who were told a lie were more likely to later tell a fib themselves. The results should encourage parents not to lie to their kids.
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Health & MedicineE-cigarettes don’t help smokers quit, study finds
People who tried e-cigarettes no more likely to give up smoking a year later.
By Nathan Seppa -
GeneticsMice lose a gene to drop some weight
Mice lacking gene have less fat, more muscle and lived longer than normal.
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HumansFormer baseball players have big, strong bones in old age
Decades later, health benefits of exercise persist in male athletes’ bones.
By Meghan Rosen -
AnimalsMama frog’s care includes a gift of poison
Strawberry poison frog tadpoles get defensive chemicals through unfertilized, nutritious eggs provided by mom.