News
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AstronomyEarly Mars couldn’t hold liquid water long
Small rocks hit Mars 3.6 billion years ago, suggesting an early atmosphere too thin for liquid water to hang around very long.
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Particle PhysicsExotic particle packs a foursome of quarks
Tetraquarks could help physicists understand the universe’s first generations of matter.
By Andrew Grant -
LifeIn a crisis, fruit flies do stunt turns
An elaborate monitoring system reveals that fruit flies can execute sophisticated flying maneuvers in the face of danger.
By Susan Milius -
NeuroscienceSmell wiring gets set early
Mess with a baby mouse’s olfaction for too long and neurons never recover.