All Stories
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AnimalsWhy create a model of mammal defecation? Because everyone poops
Mammals that defecate in the same fashion as humans all excrete waste within the same time frame, no matter their size, a new study finds.
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Health & MedicineBreast cancer cells spread in an already-armed mob
Source tumors may already contain the mutations that drive aggressive cancer spread.
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Health & Medicine‘Exercise pill’ turns couch potato mice into marathoners
An experimental "exercise in a pill" increases running endurance in mice before they step foot on a treadmill.
By Laura Beil -
Health & MedicineNew rules for cellular entry may aid antibiotic development
A new study lays out several rules to successfully enter gram-negative bacteria, which could lead to the development of sorely needed antibiotics.
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EarthIce particles shaped like lollipops fall from clouds
Small ice particles called ice-lollies, because of their lollipop-like appearance, can form in clouds.
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Paleontology‘Baby Louie’ dinosaur identified as a new species
A fossil embryo known as Baby Louie has been identified as a new species of dinosaur called Beibeilong sinensis.
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AnimalsSeabirds use preening to decide how to divvy up parenting duties
Seabirds in poor condition may communicate this information to their partner by delaying or withholding preening.
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AnthropologyHomo naledi may have lived at around same time as early humans
South African species Homo naledi is much younger than previously thought.
By Bruce Bower -
Planetary ScienceOxygen on comet 67P might not be ancient after all
Molecular oxygen detected around comet 67P may not be a relic of the solar system’s birth. Instead, it may be generated by interactions of water, the solar wind and the comet’s surface.
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ArchaeologyTwisted textile cords may contain clues to Inca messages
A writing system from the 1700s may illuminate even older knotty Inca messages.
By Bruce Bower -
AnimalsIn Florida, they’re fighting mosquitoes by meddling with their sex lives
As an alternative to genetically modified mosquitoes, Florida skeeter police are testing one of two strategies that use bacteria to meddle with insect sex lives.
By Susan Milius -
AnimalsTrackers may tip a warbler’s odds of returning to its nest
Geolocator devices that help track migrating birds could also hamper migration survival or timing.