News
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Old memories interfere with remembering new ones
Scans in healthy people reveal how the brain juggles outdated versus fresh information.
- Life
Exercise brings on DNA changes
Workouts and caffeine can turn on genes that make energy-regulating proteins.
- Physics
Lose a memory, use energy
Lab experiment confirms link between erasing information and heat flow.
- Space
Galactic smashup leaves dark matter debris
Find in ‘train wreck’ cluster forces astronomers to re-think theories about relationship between mysterious dark matter and galaxies.
- Health & Medicine
Excess salt may stiffen heart vessels
As sodium in diet increases, a coronary risk factor independent of blood pressure escalates, according to a study in middle-aged U.S.
