News
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		HumansGoogle project launches new field of culture study
An analysis of digitized books probes language change, collective memory and other cultural developments from 1800 to 2000.
By Bruce Bower - 			
			
		Health & MedicineNo fear
A woman who lacks a basic brain structure, the amygdala, couldn’t be frightened no matter how hard researchers tried. And they tried.
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		EarthClimate action could save polar bears
Cutting fossil fuel emissions soon would retain enough sea ice habitat for threatened species, scientists say.
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		Health & MedicineGene linked to some smokers’ lung cancer
FGFR1 is amped up in a subset of cancers; inhibiting its proteins can shrink tumors in mice.
By Nathan Seppa - 			
			
		EarthGassy volcanoes tied to mass extinction
Chemicals from a massive Siberian eruption 250 million years ago may have polluted the atmosphere and killed off most life on the planet.
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		LifeMice missing protein burn more fat
Research on the receptor for the 'hunger hormone' suggests a molecular strategy for revving up the body’s furnace.
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		Health & MedicineSalvia says high
Laboratory researchers show that the psychoactive substance in a popular, largely legal recreational drug causes a short but intense period of hallucination.
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		HumansApartments share tobacco smoke
Children in nonsmoking families have higher levels of secondhand exposure if they live in multifamily dwellings.
By Janet Raloff - 			
			
		ChemistryClever way to break the nitrogen-nitrogen bond
New chemical reaction cleaves dinitrogen molecule and brings carbon and nitrogen together.
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		LifeNew cellular ‘bones’ revealed
Proteins that make filaments may offer hints to how cellular scaffolding evolved.
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		LifeCells reprogrammed to treat diabetes
The testes may be an alternate source of insulin production.
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		Planetary ScienceSaturn’s rings explained
A huge shattered moon could have sprayed ice particles around the newborn planet.