Uncategorized
- Physics
In a first, scientists took the temperature of a sonic black hole
A lab-made black hole that traps sound, not light, emits radiation at a certain temperature, as Stephen Hawking first predicted.
- Physics
100 years ago, an eclipse proved Einstein right. Today, black holes do too — for now
In 1919, an eclipse affirmed Einstein’s famous general theory of relativity. Now scientists hope to use black holes to poke holes in that idea.
- Animals
A 50-million-year-old fossil captures a swimming school of fish
Analysis of a fossilized fish shoal suggests that animals may have evolved coordinated group movement around 50 million years ago.
- Health & Medicine
One number can help explain why measles is so contagious
The basic reproduction number, or "R naught," of measles shows how contagious the disease is compared with other pathogens.
- Physics
A new optical atomic clock’s heart is as small as a coffee bean
Optical atomic clocks are extremely good at keeping time, and they’re on their way to becoming pocket watches.
- Life
How bacteria nearly killed by antibiotics can recover — and gain resistance
A pump protein can keep bacteria alive long enough for the microbes to develop antibiotic resistance.
- Earth
This iconic Humboldt map may need crucial updates
A seminal, 212-year-old diagram of Andean plants by German explorer Alexander von Humboldt is still groundbreaking — but outdated, researchers say.
- Animals
Shy fish no bigger than a pinkie provide much of the food in coral reefs
More than half of the fish flesh that predators in coral reefs eat comes from tiny, hard-to-spot species.
- Math
Mathematicians report possible progress on proving the Riemann hypothesis
A new study advances one strategy in the quest to solve the notoriously difficult problem, which is still stumping researchers after 160 years.
- Health & Medicine
Being bilingual is great. But it may not boost some brain functions
A large study of U.S. bilingual children didn’t turn up obvious benefits in abilities to ignore distractions or switch quickly between tasks.
- Physics
Big black holes can settle in the outskirts of small galaxies
Astronomers have found dozens of surprisingly massive black holes far from the centers of their host dwarf galaxies.
- Physics
Spherical flames in space could solve the mystery of soot-free fires
In microgravity, flames are sphere-shaped. Tests of fire on the International Space Station are helping show how gases flow within flames.
