Astronomy

Residues on medical equipment reveal that physicians in China over 600 years ago used aconitine, a highly toxic plant chemical, to alleviate pain during surgical procedures

Men who do not produce sperm can’t be helped by existing fertility treatments, but a start-up is now claiming it can grow their sperm in the lab. Columnist Michael Le Page suspects this technique will have to be combined with gene editing if it is to help many men

Men who do not produce sperm can’t be helped by existing fertility treatments, but a start-up is now claiming it can grow their sperm in the lab. Columnist Michael Le Page suspects this technique will have to be combined with gene editing if it is to help many men

Airstrikes on Tehran earlier this year emitted a plume containing almost 30,000 tonnes of sulphur dioxide that reached Asian countries

Airstrikes on Tehran earlier this year emitted a plume containing almost 30,000 tonnes of sulphur dioxide that reached Asian countries

We've discovered large numbers of small rocky exoplanets, but they're at such great distances that habitability is extremely difficult to determine. New research suggests than since Mars is on the edge of being habitable, studying it in detail can shed light on rocky exoplanets. If we can understand things like tectonic activity and atmospheric escape on Mars, we can understand how they may play out on rocky exoplanets.

New research led by Penn State scientists suggests that some of the highest-energy cosmic rays may consist of atomic nuclei heavier than iron and could help narrow down the cosmic sources capable of accelerating these particles.

As part of a commercial partnership, NASA is developing a sophisticated chip that will give spacecraft the processing capabilities to think for themselves.

Is this a painting or a photograph?

A team of South Korean scientists has uncovered new evidence that could help explain how Earth’s atmosphere became rich in oxygen, one of the most transformative events in the planet’s history. Researchers from the Korea Institute of Geoscience and Mineral Resources (KIGAM) report the finding of stromatolites, layered structures formed by microbial communities, within the Hapcheon impact crater on the Korean Peninsula. While the Hapcheon crater is only about 40,000 years old, it shows how stromatolites got a boost from the heat in impact crater hydrothermal systems.

A rewrite of quantum mechanics that includes the force of gravity could finally achieve one of physicists’ biggest goals and reveal the ultimate fuzziness of time

A rewrite of quantum mechanics that includes the force of gravity could finally achieve one of physicists’ biggest goals and reveal the ultimate fuzziness of time

A battle between “slimes” and “zoglins” could be the best way to calculate pi—at least for fans of this megahit game

Thick and creamy, gloopy or spray-on, sunscreen can be confounding. This science-backed guide can help you get ready for summer

There is currently no good way for astronauts in space to do laundry, but researchers may have finally come up with one: a bright purple jet of microbe-killing plasma

There is currently no good way for astronauts in space to do laundry, but researchers may have finally come up with one: a bright purple jet of microbe-killing plasma

In the age of AI, instant answers to our questions are readily available. But columnist Helen Thomson finds that continuing to encourage those delicious flashes of insight that come from your own thoughts may be beneficial both for your everyday life and your long-term brain health

In the age of AI, instant answers to our questions are readily available. But columnist Helen Thomson finds that continuing to encourage those delicious flashes of insight that come from your own thoughts may be beneficial both for your everyday life and your long-term brain health

Could the "Great Silence" be the result of extraterrestrial civilizations dying out before they can make contact, or will they evolve to the point where communication with them is no longer possible?

It’s 2035 and NASA’s Dragonfly quadcopter has been “hopping” around the surface of Saturn’s largest moon Titan for just over a year taking images, scanning pebbles, drilling holes, and analyzing surface material for potential signs of life. You’re at NASA JPL and just moved to Blue Team (12am-8am) from Red Team (4pm-12am), so you’re hyped up on coffee, Red Bull, and will power. It’s 3:30am, you’ve been analyzing data since you clocked in, and you keep discarding what you’ve been told looks like positive signs of life but is more commonly known as false positives. In the meantime, some microbes on Titan that got scanned by Dragonfly keep posing in front of its main camera with signs saying, “We’re here!”