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Health & MedicineSingle drug dose may be better against cholera
A single dose of the antibiotic ciprofloxacin cures cholera in children as often as a 12-dose regimen of erythromycin does.
By Nathan Seppa -
Planetary ScienceShoreline for Titan?
New radar images of Saturn's smog-shrouded moon Titan show evidence of a shoreline cutting across the moon's southern hemisphere.
By Ron Cowen -
Planetary Science’10th planet’ has a partner
The so-called 10th planet, an object larger than Pluto that ranks as the most distant body known in the solar system, has a moon.
By Ron Cowen -
PhysicsNanobots walk ‘n’ roll
A molecule that waddles on stubby feet and another that drives on ball-like wheels demonstrate scientists' increasing control over the usually haphazard motion of molecules on surfaces.