News
- Life
Bee genes may drive them to adventure
Scouting behavior linked to certain molecules in insect brains.
- Health & Medicine
A dash of marrow helps kidney transplant
A new approach enables researchers to wean some patients who receive poorly matched kidneys off immune-suppressing drugs
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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Scans in healthy people reveal how the brain juggles outdated versus fresh information.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. men.
- Life
Sawfish don’t saw
Spiked snouts whack prey to the bottom, helping the predator better get its mouth around dinner.
- Life
Fossil pushes back land-animal debut
Creatures first squished mud through their five toes millions of years earlier than previously believed.
- Physics
Plants’ reproductive weaponry unfurled
Botanical tricks include adhesion and bubbles to spread their spores into the environment.
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- Humans
Technique may reveal where it all began
A new strategy overcomes a distance quandary as it tracks the origins of widespread phenomena — from an E. coli outbreak to a fad.
