Uncategorized
- Humans
Lines in the sand may have been made for walking
The ancient Nazca culture’s celebrated desert drawings include a labyrinth meant to be strolled, not seen.
By Bruce Bower - Planetary Science
Violent past revealed by map of moon’s interior
A gravity survey by twin orbiters reveals how much the lunar surface was pummeled by meteorite impacts early in its history.
- Health & Medicine
Drug breaks up Alzheimer’s-like deposits in mice
Recent failed trials of a similar approach in humans fuel skepticism that patients will benefit.
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- Space
LHC sees odd behavior in superhot particle soup
Coordinated motion in debris from lead-proton collisions may yield clues about quark-gluon plasma.
By Andrew Grant - Space
Extraterrestrial chorus heard in radiation belts
Van Allen probes capture sound of electromagnetic disturbances in Earth’s magnetosphere.
- Health & Medicine
Smoking hurts teen girls’ bones
Adolescents who use cigarettes seem to accumulate less bone mineral than those who don’t.
By Nathan Seppa - Life
Contender for world’s oldest dinosaur identified
An African specimen suggests the lineage may have arisen 15 million years earlier than thought.
By Tanya Lewis - Astronomy
Voyager crossing superhighway to solar system exit
The latest milestone in a 35-year journey may signal an impending passage to interstellar space.
By Tanya Lewis - Life
Among bass, easiest to catch are best dads
Recreational fishing may be inadvertent evolutionary force, favoring cautious fish over better caretakers of the young.
By Susan Milius - Life
Gut bacteria may affect cardiovascular risk
An abundance of antioxidant-producing microbes seems to keep plaques from breaking free and causing heart attacks and stroke.
- Planetary Science
Mars rover deploys final instrument
Soil analysis finds organic compounds of uncertain origin.