science
We may finally know why birds sing at dawn
Birds all over the world break into a dawn chorus every morning – now experiments in zebra finches suggest both a mechanistic and a functional explanation for this phenomenon Source link
Serum promotes hair growth by mimicking the effects of skin irritation
Skin irritation, such as through eczema, promotes hair growth in mice, which prompted scientists to create a treatment that works via similar pathways, with no discomfort required Source link
Exclusive: Climate scientists expect attempts to dim the sun by 2100
An exclusive New Scientist survey of leading scientists reveals widespread concern that schemes to tweak Earth’s atmosphere could launch within decades in a risky bid to cool the planet Source link
Everything is perimenopause now – but what if it’s not?
Many of the signs of perimenopause can also be symptoms of other conditions, and some of these get increasingly dangerous if they’re misdiagnosed Source link
Eye implant and high-tech glasses restore vision lost to age
Age-related macular degeneration is a common cause of vision loss, with existing treatments only able to slow its progression. But now an implant in the back of the eye and a pair of high-tech glasses have enabled people with the condition to read again Source link
We can use ordinary sugar in the search for dark matter
Physicists have tried so many different ways to find dark matter, but none has been successful. Now an unexpected contender has entered the arena – ordinary table sugar. Source link
There's a simple way we could drastically cut AI energy use
If users chose the most efficient model each time they performed a task with AI, researchers calculate it would slash energy consumption by more than a quarter Source link
Ancient lead exposure may have influenced how our brains evolved
Lead poisoning isn’t just a modern phenomenon: fossil teeth show signs that it affected ancient hominids, and Homo sapiens may have coped better than our close relatives Source link
New Scientist recommends Sheri S. Tepper's science fiction novel Grass
The books, TV, games and more that New Scientist staff have enjoyed this week Source link
CO2 levels in Earth's atmosphere jumped by a record amount in 2024
The global average concentration of CO2 surged by 3.5 parts per million to reach 423.9 ppm last year, fuelling worries that the planet’s ability to soak up excess carbon is weakening Source link