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AnimalsWinter road salting reshapes next summer’s butterflies
Winter road salt treatments boost sodium in roadside plants and alter development for monarch butterflies.
By Susan Milius -
LifeOxytocin stimulates repair of old mice’s muscles
The naturally produced hormone oxytocin, well known for its role in social bonding, may help heal injured muscles in the elderly.
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AstronomyStopping starlight may bring other Earths into focus
Two new telescope concepts compete for NASA’s approval, in hopes of taking the first picture of a life-bearing exoplanet.
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AgricultureFertilizer produces far more greenhouse gas than expected
Farmers’ overuse of nitrogen-based fertilizers may explain previously puzzling high emissions of nitrous oxide.
By Beth Mole -
AstronomyHubble space telescope spies teenage galaxies
New Hubble telescope images show ultraviolet radiation from stars born during the universe’s adolescent phase.
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NeuroscienceRats feel regret, experiment finds
When they turn down a good meal for a lesser one, rodents regret their choice, a study suggests.
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Materials ScienceNew invisibility cloak hides in the fog
A simple invisibility cloak relies on hazy environments to mask objects.
By Andrew Grant -
PaleontologyPreserved pterosaur eggs hint at reptile’s social life
The first 3-D pterosaur eggs, which were found in China, suggest that the flying reptiles laid eggs together.
By Meghan Rosen -
NeuroscienceStem cell approach for Parkinson’s disease gets boost
Postmortem study finds Parkinson’s patients can retain transplanted neurons for years.
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AstronomyGalactic collision creates huge particle collider
New images reveal a jet of particles shooting out of a collision among four galaxy clusters.
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NeuroscienceSleep strengthens some synapses
Mice show signs of stronger neuron connections when allowed to sleep after learning a trick.
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Planetary ScienceMoon’s origins revealed in rocks’ chemistry
A new chemical measurement of rocks from Earth and from the moon supports the giant impact hypothesis, which explains how the moon formed billions of years ago.
By Meghan Rosen