All Stories by Science News Staff
- Health & Medicine
Drug use on the rise in older set
The use of illicit drugs has declined slightly over the last decade among teens but is growing more common in people over age 50.
- Astronomy
Bright gamma-ray burst tests idea of event’s origins
High-energy light particles suggest that physicists need to revise their theories explaining the origin of these cosmic blasts.
- Life
Only two Y chromosome genes needed for viable mouse sperm
Healthy and fertile mice were born from embryos created using spermlike cells.
- Neuroscience
Another look at paralysis
Robotic suits help paralyzed people move, but simple behavior changes may prevent the accidents that cause the injuries.
- Microbes
Microbes help hyenas send status updates
Bacteria in the animals’ waste give off fumes that let passersby know who has been there before.
- Paleontology
Oldest known T. Rex relative found in Utah
Researchers say the animal — named the gore king of the southwest — was an early member of the tyrannosaur family.
- Science & Society
Feedback
Our redesigned cover and the astronomy stories from the Oct. 19 issue get readers' reviews.
- Psychology
Male version of eating disorder replaces purging with muscle enhancers
Physique concerns can drive young men to take banned substances.
- Physics
New Atomic Accelerator
This excerpt from the December 14, 1963, issue of Science News Letter talks about how the atom smashers at Argonne National Lab have evolved.
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- Planetary Science
Moon material on Earth
Scientists now think that tektites are a type of impactite, formed during the rapid heating and cooling of material ejected when a meteorite strikes Earth.
- Microbes
Prairie microbes could aid region’s restoration
Surveying the bacteria living in the soils of grassland ecosystems may help revive the habitats.
