News
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Health & MedicineA dash of marrow helps kidney transplant
A new approach enables researchers to wean some patients who receive poorly matched kidneys off immune-suppressing drugs
By Nathan Seppa -
Old memories interfere with remembering new ones
Scans in healthy people reveal how the brain juggles outdated versus fresh information.
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LifeExercise brings on DNA changes
Workouts and caffeine can turn on genes that make energy-regulating proteins.
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PhysicsLose a memory, use energy
Lab experiment confirms link between erasing information and heat flow.
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SpaceGalactic smashup leaves dark matter debris
Find in ‘train wreck’ cluster forces astronomers to re-think theories about relationship between mysterious dark matter and galaxies.