Quantum microphone works even better than a regular one
By detecting tiny movements of particles of light, a quantum microphone has recorded human speech that is easier to understand than if it is captured...
What’s a bear market? An economist explains
A 16th-century proverb advises: “It’s unwise to sell a bear’s skin before catching it.” That’s one of the stories used to explain why, in modern...
Backpack-wearing rats could start search-and-rescue missions next year
African pouched rats equipped with backpacks are being trained to locate survivors trapped under debris. Their size, natural curiosity and powerful sense of smell make...
Feedback loop in Greenland amplified ice melt from warm weather
Last August, rain fell for the first time at the peak of Greenland’s ice sheet, but this had little impact on ice melt compared with...
Long covid risk with omicron variant may be half what it is with delta
After analysing a symptom-tracking app, researchers found 4.5 per cent of users who were infected when the omicron variant was dominant had symptoms at least...
Watch this strange fluid act like a solid and liquid at the same time
Physicists have used high-speed cameras to see a drop of an odd fluid both solidify and keep flowing when it falls and hits the ground...