News
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CosmologyThe universe’s continued existence implies extra dimensions are tiny
The strictest limits yet on the size of extra dimensions come from the fact that black holes haven't destroyed the universe.
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PhysicsA new ultrafast laser emits pulses of light 30 billion times a second
A new technique allows lasers to pulsate at a higher rate than ever before.
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Health & MedicineCity size and structure may influence influenza epidemics
The size and structure of cities helps shape the progression of new influenza cases during a flu season, a new study finds.
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Planetary ScienceSaturn’s ‘ring rain’ is a surprising cocktail of chemicals
NASA’s Cassini probe got a closeup view of the material falling from Saturn’s rings into the planet.