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		Letters
Consciousness series pondered Hofstadter’s “strange loop” and other ideas presented in the article “Self as symbol” (SN: 2/11/12, p. 28) suggest, but never say, that the notion of “I” exists in the dimension of time, not space. Obviously then, consciousness is not a tangible object — not any part of the brain. Rather, the “I” […]
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		Mixed Results
Having the right blend of animal personalities can make or break a group
By Susan Milius - 			
			
		Health & MedicineThroat Therapy
Scientists seek a cough remedy that really delivers relief.
By Laura Beil - 			
			
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		Health & MedicineExtreme eaters show abnormal brain activity
Seeing images of food revs up reward areas in the obese and slows them down in severely underweight people, a brain scan study shows.
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		LifeStem cell treatment spurs cartilage growth
A small molecule called kartogenin prompts the manufacture of lost connective tissue in mice.
By Nathan Seppa - 			
			
		PaleontologyT. rex has another fine, feathered cousin
A trio of fossils from China may tip the scales on dinosaurs’ public image.
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		LifeFruit fly biorhythms differ indoors and out
Response to daily cues of real life suggest lab findings may need a second look.
By Susan Milius - 			
			
		PsychologyAutism rates rise again
Related developmental disorders affect 1.1 percent of U.S. 8-year-olds.
By Bruce Bower - 			
			
		PhysicsHighlights from the American Physical Society April Meeting, Atlanta
String theory’s take on the Higgs, newborn pulsars may have iron by-products, and coupled neutrons in beryllium nuclei revealed.
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		LifeGenes are no crystal ball for disease risk
For most conditions, knowing a person’s entire genetic makeup won’t help predict his or her medical history.
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		LifeVirus proves protective against lupus in mice
A mouse version of Epstein-Barr seems to prevent, not trigger, symptoms of the autoimmune disease.