News
- Genetics
The Amazon molly — a sex-skipping fish — hacks evolution
The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown.
- Astronomy
A strange ‘chirp’ in a brilliant stellar blast points to a magnetar
Superluminous supernovas are the brightest stellar explosions in the universe. Astronomers may have found a mechanism that can trigger these events.
- Animals
Submerged bumblebee queens breathe underwater
Submerged bees breathe and use strategies that don’t require oxygen, lab tests show. In nature, that trick could help the bees survive floods.
- Health & Medicine
‘Smart underwear’ measures how often humans fart
“Zen digesters” rarely fart. “Hydrogen hyperproducers” fart a lot. Scientists are investigating what is typical.
- Plants
Tree tops sparkle with electricity during thunderstorms
Ultraviolet cameras captured faint electrical flashes from leaves and branches as storm charges built up in the atmosphere.
- Climate
Lakes are growing in Alaska. That’s not entirely a bad thing
Alaska’s glacial lakes are growing as glaciers retreat out of basins. These lakes will change desolate glacial rivers into thriving salmon habitat.
- Physics
When the pressure’s off, this superconductor appears to break records
A sudden release of pressure allowed a copper-based compound to superconduct at the highest temperature yet for atmospheric pressure, a study claims.
- Health & Medicine
How does early pregnancy lower breast cancer risk? Odd cells could offer clues
Suspicious cells build up in mice that haven’t given birth, a new study finds. They could help explain a longstanding mystery of breast cancer biology.
- Planetary Science
NASA’s DART spacecraft changed an asteroid’s orbit around the sun
A 2022 NASA mission changed the orbit of the asteroid Dimorphos around its companion. New data shows their joint orbit around the sun also changed.
- Neuroscience
The remarkable brains of ‘SuperAgers’ hold clues about how we age
A new study reports signs that nerve cells in the brain keep dividing over the decades. It’s not so simple.
- Tech
Robots with fingernails can grasp thin edges
A robotic hand with fingernail-like tips lets robots peel fruit, open lids and pick up thin, flat objects with more precise, human-like dexterity.
- Animals
A koala population’s rapid rebound may let it escape inbreeding’s perils
As koalas in southern Australia have grown from a few hundred to almost half a million, the marsupials show signs of regaining lost genetic variation.
