Humans
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We summarize the week's scientific breakthroughs every Thursday.
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		Health & MedicineMagnets, my foot!
Shoe inserts with magnets have no more effect against foot pain than insoles without them.
By Nathan Seppa - 			
			
		Health & MedicineDanger, danger, cry injured cells
Damaged cells may release uric acid to rouse the immune system.
By John Travis - 			
			
		Health & MedicineDo Arctic diets protect prostates?
Marine diets appear to explain why the incidence of prostate cancer among Inuit men is lower than that of males anywhere else in the world.
By Janet Raloff - 			
			
		AnthropologyErectus Ahoy
A researcher who explores the nautical abilities of Stone Age people by building rafts and having crews row them across stretches of ocean contends that language and other cognitive advances emerged 900,000 years ago with Homo erectus, not considerably later among modern humans, as is usually assumed.
By Bruce Bower - 			
			
		HumansFrom the October 7, 1933, issue
ANCIENT MAP SHOWS HOW WORLD LOOKED TO COLUMBUS Startled to find the name Columbus mentioned on an old Turkish map of the Atlantic Ocean, Paul Kahle has subjected the map to closest study, finding on it important new clues to the discovery of America. In a report on his investigations, to appear in the forthcoming […]
By Science News - 			
			
		HumansNobel prizes go to scientists harnessing odd phenomena
The 2003 Nobel prizes in the sciences were announced early this week.
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		Health & MedicineWas President Taft cognitively impaired?
President William Howard Taft apparently had sleep apnea, a breathing disorder that could explain his propensity to nod off.
By Nathan Seppa - 			
			
		Health & MedicineMaking the heart burn
Burning chest pain during a heart attack may stem from a protein that also responds to chili peppers.
By John Travis - 			
			
		Health & MedicineCoronary Fix: Coated inserts keep vessels unclogged
Mesh cylinders called stents, which doctors use to prop open coronary arteries, work better when they are coated with sirolimus, a drug that inhibits the accumulation of cells along the device.
By Nathan Seppa - 			
			
		Health & MedicineTiming That First Spoonful: Diabetes risk reflects when cereals enter infant diet
The timing of cereals' introduction into children's diets may affect their risk of developing type 1 diabetes, two studies suggest.
By Ben Harder - 			
			
		AnthropologyY Trail of the First Americans: DNA data point to late New World entry
Scientists identified a gene variant on the Y chromosome that allowed them to estimate that people first reached the Americas no earlier than about 18,000 years ago.
By Bruce Bower - 			
			
		Health & MedicineOne bug’s bane may be another’s break
People who carry pneumococcus bacteria in their nasal passages may be partially protected against having their noses colonized by Staphylococcus aureus.
By Ben Harder