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Planetary ScienceWater’s origin story, science and sci-fi and more reader feedback
Readers discuss how Earth got its water, chat about a hot spot's violent past and more.
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AnimalsUnpredictable egg scramble throws off parasitic parents
Eggs of some species of warbler and weaver birds appear to have individual signatures, which can help distinguish them from the eggs of parasitic cuckoos.
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Health & MedicineRehab for psychopaths
Psychopaths often don’t fit movie stereotypes, but they share particular characteristics. New research shows that, contrary to popular thought, cognitive behavioral therapy can help some psychopaths stay out of prison.
By Bruce Bower -
AstronomyDistant galaxy may contain primeval stars
A stockpile of the first generation of stars might be lighting up gas in a galaxy that existed roughly 800 million years after the Big Bang.
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NeuroscienceHomunculus reimagined
A new study pinpoints the part of the brain that controls the neck muscles, tweaking the motor homunculus.
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AnimalsMoon jellies muscle their way to recovery
Symmetrization, using rapid muscle movements to repair body symmetry, is the go-to healing mechanism for the limbed stage of moon jellyfish.
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AnimalsMale peacocks keep eyes low when checking out competition
Eye-tracking technology shows peacocks barely gaze at the full height of other males magnificent eyespot feather spreads.
By Susan Milius -
AnimalsHow a trap-jaw ant carries a baby
Powerful jaws make the Odontomachus brunneus ant a skilled escape artist.
By Susan Milius -
AnimalsWhy whistling caterpillars scare birds
Caterpillars that whistle when birds peck at them may be giving phony avian warning calls.
By Susan Milius -
Planetary ScienceMethane found in meteorites from Mars
Methane stored in Martian meteorites points to possibly habitable environments beneath the surface of the Red Planet.
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LifeTwisty chains of proteins keep cells oriented
The counterclockwise twist of protein fibers jutting out from the edge of human cells allow the cells to distinguish right from left.
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EcosystemsOcean food source lives by day, dies by night
The most abundant carbon fixer in the oceans lives by day, dies by night, and may be key to the balance of marine ecosystems.