Feature
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		The Why of Sleep
Brain studies may reveal the purpose of a behavior both basic and mystifying.
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		Dying to Sleep
Getting too little sleep can impair body and brain and could even be deadly.
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		LifeAn oceanic endeavor
Marine census catalogs creatures that roam all corners of the seas.
By Susan Milius - 			
			
		LifeThe unusual suspects
With no obvious culprit in sight, geneticists do broader sweeps to identify autism’s causes.
By Susan Gaidos - 			
			
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		Rust Never Sleeps
A new flare-up in an age-old battle between wheat and a fungal killer.