News in Brief
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		PhysicsShifting grains may explain earthquake lightning
Mysterious lightning before or during earthquakes could get its spark from underground shifting.
By Andrew Grant - 			
			
		AstronomyGalaxy drags trail of stars behind it
A Hubble Space Telescope image shows the galaxy ESO 137-001 dragging star trails behind it as it plows through the Norma galaxy cluster.
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		NeuroscienceMusic doesn’t move some people
One study offers a glimpse into those who find no enjoyment in tunes.
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		PhysicsMaterial’s magnetism tuned by temperature
Layered substance may lead to more reliable hard drives in the future.
By Andrew Grant - 			
			
		TechShining a light on radio waves
A new device detects faint signals by first converting them to laser pulses.
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		Health & MedicineHPV vaccination proves its worth in Australia
A study in Australia finds the shots are already reducing cases of abnormal cervical lesions.
By Nathan Seppa - 			
			
		AnthropologyHuman ancestors at West Asian site deemed two species
Researchers see two species instead of one at oldest known Homo site outside Africa.
By Bruce Bower - 			
			
		AstronomyPulsar pulverizes an asteroid
The steady beat of a pulsar may occasionally be interrupted by collisions with asteroids.
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		Health & MedicineAcetaminophen use in pregnancy linked to kids’ slightly higher risk of ADHD
A large analysis shows an association between acetaminophen use in pregnancy and slightly higher risks of ADHD, but it does not prove the pain reliever causes the disorder.
By Nathan Seppa - 			
			
		EnvironmentLegionnaires’ disease bacteria lurk in tap water
Found in nearly half of faucets, contamination could explain sporadic cases of disease.
By Beth Mole - 			
			
		Health & MedicineMesh best for hernia repair
Data from nine studies show fewer recurrences than fixes with sutures only.
By Nathan Seppa - 			
			
		AstronomyWhile exploding, supernovas not spherical
X-rays reveal uneven allotment of element made by blowup.
By Andrew Grant