Uncategorized
- Animals
The mere sight of illness may kick-start a canary’s immune system
Healthy canaries ramp up their immune systems when exposed to visibly sick birds, without actually being infected themselves.
- Physics
Auroras form when electrons from space ride waves in Earth’s magnetic field
New lab results confirm that auroras are triggered by disturbances in Earth’s magnetic field called Alfvén waves.
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50 years ago, NASA relaxed quarantine rules for returning moon missions
Fifty years after NASA declared that moon missions returning to Earth weren’t a contamination risk, protocols for planetary missions are under review.
- Health & Medicine
FDA approved a new Alzheimer’s drug despite controversy over whether it works
A new Alzheimer's treatment slows progression of the disease, the drug’s developers say. But some researchers question its effectiveness.
- Health & Medicine
Food that boosts gut microbes could be a new way to help malnourished kids
Malnourished children in Bangladesh fed a food aimed at restoring gut health grew more than those who got a traditional high-calorie supplement.
- Plants
These ferns may be the first plants known to share work like ants
Staghorn ferns grow in massive colonies where individual plants contribute different jobs. This may make them “eusocial,” like ants or termites.
- Physics
Nuclear clocks could outdo atomic clocks as the most precise timepieces
Better clocks could improve technologies that depend on them, such as GPS navigation, and help test fundamental ideas of physics.
- Health & Medicine
After 40 years of AIDS, here’s why we still don’t have an HIV vaccine
The unique life cycle of HIV has posed major challenges for scientists in the search for an effective vaccine.
- Science & Society
How science museums reinvented themselves to survive the pandemic
The pandemic forced science museums to reach out to their communities, and some built a wider following.
- Paleontology
Something mysteriously wiped out about 90 percent of sharks 19 million years ago
Deep sediments beneath the Pacific Ocean revealed a mystery: a massive shark die-off with no obvious cause.
- Science & Society
50 years ago, scientists predicted steady U.S. population growth
The country’s annual population growth rate, mostly stable since the 1970s, is now the lowest it’s been in over a century.
- Animals
Newly recognized tricks help elephants suck up huge amounts of water
New ultrasound imaging reveals what goes on inside a pachyderm’s trunk while feeding. It can snort water at the rate of 24 shower heads.
