News
- Astronomy
Fast-moving star is a really big loser
The cosmic bullies that sent 30 Doradus 016 reeling must be even bigger, possibly upping the theoretical maximum heft of today’s stars.
- Space
Asteroid-bound: Scientists look for worthy rock
Scientists consider how to pick a prime asteroid for human exploration
- Life
One ocean, four (or more) killer whale species
A new genetic analysis splits killer whales into multiple taxa.
- Health & Medicine
Taste of power goes to the head, then muscles
Just a swish of the carbohydrates in an energy drink can increase muscle performance, a study suggests.
- Health & Medicine
Genetic switch makes old mice forgetful
Reversing a chemical change restored the animals’ memory-making ability.
- Life
Neandertal genome yields evidence of interbreeding with humans
After years of looking, geneticists are shocked to find that 1 percent to 4 percent of DNA in people from Europe and Asia is inherited from Neandertals.
- Chemistry
Decon Green can clean up the most toxic messes, developers claim
A new decontaminant could be a more benign alternative for cleaning up after chemical and biological accidents.
- Life
Undereducated immune cells get aggressive with HIV
Scientists discover a mechanism that makes some people resistant to infection with the AIDS virus.
- Space
New Hubble pictures suggest Milky Way fell together
A preliminary analysis appears to strike a blow against the prevailing theory of galaxy formation.
- Health & Medicine
U.S. childhood obesity rate continues to rise
Only a few states buck the trend toward greater weight gain in kids age 10 to 17, a new survey shows.
- Earth
Gulf oil spill a slow-motion hurricane
The accident’s timing could determine how badly it damages coastal marshes.
- Health & Medicine
Epigenetic changes show up in people with PTSD
Study finds alterations in genes tied to immune system and brain development, but whether they cause the disorder remains unclear.
