Life
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We summarize the week's scientific breakthroughs every Thursday.
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		AnimalsFearless tadpoles give invaders the edge
Clueless larvae don’t heed the scent of nonnative turtles, giving newcomers an edge over native species, a European study finds.
By Susan Milius - 			
			
		LifeStuck in the past
Reprogrammed stem cells retain molecular memories of their former identities, two new studies show.
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		LifeAnimal sperm arose once
A gene governing production of male reproductive cells goes back to a common ancestor that lived about 600 million years ago, a study finds.
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		ChemistrySmelling the menu
Mouse breath triggers special cells in the nose that help send a safe-to-eat message.
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		EarthNew ‘walking’ fishes discovered in Gulf oil-spill zone
Pancake batfishes may be getting oiled before they get named.
By Susan Milius - 			
			
		PaleontologyApes and Old World monkeys may have split later than thought
A 29- to 28-million-year-old primate fossil found in Saudi Arabia assists scientists in timing a major evolutionary transition.
By Bruce Bower - 			
			
		LifeScience leaps forward with Calaveras County frog jump
Biologists test the pros of amphibian athletics.
By Susan Milius - 			
			
		Health & MedicineAntiaging protein also boosts learning and memory
An antiaging molecule also helps keep the mind sharp.
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		Health & MedicineProteins last longer in the brain
A study in mice could lead to a better understanding of aging, Alzheimer’s and other degenerative processes.
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		Health & MedicineCritics point to flaws in longevity study
BLOG: A study showing a genetic basis for exceptionally long life in humans has come under fire from critics.
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		EarthMangroves do a coast good
Left intact, dense swaths of trees can reduce tsunami damage, a new study suggests.
By Sid Perkins