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We summarize the week's scientific breakthroughs every Thursday.
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		ChemistryFaucets Destined for Brassy Changes
Although new standards poised to take effect in a few years will reduce the lead-leaching risk from drinking water faucets, showerheads and many other water dispensers around will remain unregulated.
By Janet Raloff - 			
			
		TechLead-free? Faucets are anything but
Featured blog: Users of brand-new buildings on a major university campus were surprised to discover high concentrations of lead in the water. Faucets were the culprit.
By Janet Raloff - 			
			
		HumansStone Age innovation out of Africa
Researchers have dated two innovative Stone Age tool industries in southern Africa that may have helped spur human migrations out of Africa.
By Bruce Bower - 			
			
		LifeThe Iceman’s mysterious genetic past
Scientists say that they have identified the complete mitochondrial DNA sequence of the 5,000-year-old Tyrolean Iceman, whose body was found protruding from a glacier in 1991.
By Bruce Bower - 			
			
		ChemistryHoley Copper Pipes!
Engineers are homing in on germs and other surprises behind the development of tiny holes in home water pipes.
By Janet Raloff - 			
			
		Health & MedicineA sugar helps E. coli go down
Some harmful strains of E. coli might rely on something sweet to do harm.
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		Health & MedicineMalaria takes on the top meds
Malaria is thwarting frontline drugs called artemisinins in Cambodia.
By Nathan Seppa - 			
			
		Health & MedicineFungal meningitis spreads in Pacific Northwest
A fungus called Cryptococcus gattii that causes meningitis is slowly making its way down the North American West Coast.
By Nathan Seppa - 			
			
		ArchaeologyReturn of the kings
Excavations in southern Jordan have incited controversy about whether a copper-producing society existed there 3,000 years ago, and whether it was controlled by Israeli kings described in the Old Testament.
By Bruce Bower - 			
			
		TechBias, quakes and viruses, oh my!
Researchers present findings at the annual New Horizons in Science meeting.
By Science News - 			
			
		Health & MedicineEarlier HIV treatment can save more lives
Moving up the starting point for HIV treatment leads to improved survival rates.
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		Health & MedicineAbout McCain’s Melanoma
The Republican presidential hopeful faces a small but lingering risk of cancer recurrence.
By Janet Raloff