News
- Space
The historic ‘Wow!’ signal may finally have a source. Sorry, it’s not aliens
One of the best possible signs of extraterrestrial communication may have an astrophysical explanation — albeit a weird one.
- Astronomy
The nearest midsized black hole might instead be a horde of lightweights
Astronomers recently reported that the Milky Way star cluster Omega Centauri hosts an elusive type of black hole. A new study says it does not.
- Animals
This spider makes its home in the burrows of extinct giant ground sloths
Caves made by extinct giant ground sloths make the perfect home for a newly discovered type of long-spinneret ground spider from Brazil.
- Animals
This spider uses trapped fireflies to lure in more prey
Male fireflies trapped in the spider’s web flash femalelike lights, possibly luring in other flying males and allowing the arachnid to stock up on food.
- Chemistry
Old books can have unsafe levels of chromium, but readers’ risk is low
An analysis of a university collection found that the vibrant pigments coating some Victorian-era tomes exceed exposure limits for the heavy metal.
- Paleontology
This spiky fossil shows what early mollusks looked like
The fossil, plus 17 others from more than 500 million years ago, reveal that early mollusks were slug-like creatures with prickly armor.
- Astronomy
A distant quasar may be zapping all galaxies around itself
Star formation has ceased within at least 16 million light-years of the quasar. A similar phenomenon may have fried the Milky Way when it was young.
- Paleontology
The asteroid that may have killed the dinosaurs came from beyond Jupiter
The Chicxulub crater, left behind by the impact, contains elemental traces that suggest the origins of the notorious projectile.
- Environment
More than 4 billion people may not have access to clean water
The new estimate, based on data from 135 low- and middle-income countries, is more than double the World Health Organization’s official count.
- Space
Astronauts actually get stuck in space all the time
Butch Wilmore and Sunita Williams join more than a dozen astronauts who’ve been stranded in space by mechanics, weather or geopolitics since the 1970s.
- Health & Medicine
Why mpox is a global health emergency — again
The WHO made the declaration as a potentially more infectious version of the deadly virus has emerged and mpox cases are rapidly rising across Africa.
- Neuroscience
A hunger protein reverses anorexia symptoms in mice
Boosting levels of protein ACBP spurred the mice to eat and gain weight. It is unclear if any drugs based on the protein might help people with anorexia.
