Humans
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We summarize the week's scientific breakthroughs every Thursday.
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		Health & MedicineEarly treatment may stave off esophageal cancer
Zapping precancerous tissue in patients with Barrett’s esophagus might reduce incidence of cancer.
By Nathan Seppa - 			
			
		Health & MedicineTelling kids lies may teach them to lie
In a new study, kids who were told a lie were more likely to later tell a fib themselves. The results should encourage parents not to lie to their kids.
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		Health & MedicineE-cigarettes don’t help smokers quit, study finds
People who tried e-cigarettes no more likely to give up smoking a year later.
By Nathan Seppa - 			
			
		HumansFormer baseball players have big, strong bones in old age
Decades later, health benefits of exercise persist in male athletes’ bones.
By Meghan Rosen - 			
			
		Health & MedicineSudden death
Cardiologists disagree on whether electrocardiograms should be used to screen student athletes for a rare heart condition that can cause them to die suddenly and without warning.
By Laura Beil - 			
			
		Health & MedicineSmall molecule makes brain cancer cells collapse and die
A small molecule, Vacquinol-1, may provide a different way to target and kill cells in glioblastomas, a type of brain tumor.
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		ClimateClimate change may spread Lyme disease
The territory of the ticks that transmit Lyme disease is growing as the climate warms.
By Beth Mole - 			
			
		GeneticsEarly Polynesians didn’t go to Americas, chicken DNA hints
Contamination of ancient chicken DNA may explain previous report linking Polynesians to South America.
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		PsychologyNewborns seem to relate space, time and numbers
Newborns zero to three days old seem to have the ability to relate the concepts of space, time and numbers of objects.
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		Health & MedicineSugar doesn’t make kids hyper, and other parenting myths
There’s no shortage of advice out there for parents, but some pearls of wisdom simply aren’t true.
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		PsychologyHow string quartets stay together
New data tracking millisecond-scale corrections suggests that some ensembles are more autocratic — following one leader —while other musical groups are more democratic, making corrections equally.
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		PsychologyAttractiveness studies are hot, or not
Studies that link attractiveness to other traits are often misinterpreted, including recent studies of nose bacteria and of cycling ability.