Scientific American.com

China’s artificial embryos are part of an experiment to learn more about how human pregnancies could develop under microgravity conditions

Like modern crocodiles, this bizarre ancient reptile was likely a carnivore, but otherwise it bears little resemblance to them

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

This teensy creature was discovered along a deep-sea mountain

Over the course of 13 expeditions and other efforts between mid-2025 and mid-2026, scientists found hundreds of previously undiscovered creatures living under the waves

Our universe appears flat—but this observation still leaves plenty of options for its true shape. In fact, our cosmos could resemble a donut

Friday’s test flight marks a major milestone for SpaceX as the company gears up to go public and to participate in NASA’s Artemis III mission in 2027

An astrophotographer teamed up with Artemis II commander Reid Wiseman to create these stunning new images of the lunar surface

The trend of attorneys getting caught citing AI-hallucinated cases points to a broader problem: instead of checking AI’s work, people keep trusting it

Scientists are working to solve a mystery of Earth’s molten outer core, which lies more than 2,000 kilometers beneath our feet

Bundibugyo virus is an uncommon species of Ebola-causing virus that has been linked to only two other known outbreaks

Smart-panel start-up Span wants to turn spare household electricity into AI computing power. How far it can scale and what effect that would have on the residential grid remain unsettled

Our galaxy and its nearest large companion, Andromeda, may be headed for a collision on a cosmic scale. What happens then?

In an effort to reduce prices at the pump, an EPA wavier allows the sale of fuel with 15 percent ethanol content

How an experiment involving a made-up skin condition exposes the risks of increasingly popular AI medical advice

This launch, when it comes, will mark the 12th flight test of Starship and the first demonstration of its V3 design. A new attempt could come as soon as Friday

Constructed by ancient Egyptians, the Great Pyramid has survived multiple earthquakes through the ages—now researchers think they know why

These critters were carrying the Sin Nombre variant of hantavirus, which can be spread from rodents to humans but not from one person to another

An out-of-this-world weather report from NASA’s James Webb Space Telescope reveals how clouds move across a giant planet hundreds of light-years from Earth