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

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

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

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

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

The intimidating legacy of the scariest problem in mathematics

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

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

In a special report, we explore how computers that exploit the bizarre rules of the quantum realm could change the world.
Elsewhere in the issue: A New Race to the Moon | Lost Roads of the Roman Empire | The Scariest Problem in Math

A chatbot’s result for the 80-year-old “unit distance” conjecture is the first AI proof that would likely be published in math’s top journal if humans had done it alone

This company says its pulsed plasma machine will deliver electricity to the grid by 2029. Some physicists warn that its promises are outrunning what the technology has proved

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

Researchers discovered the copy of the 1,300-year-old poem lurking inside a historical text in an Italian library

Test your logic and arithmetic daily with 4x4 KenKen®

Experts question this study’s design and its recommendations—and point out that you probably get more exercise than you think

A massive digitization project has nearly doubled the known extent of the first continent-scale road network

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

Gold doesn’t tarnish like similar metals do. A new paper says that the key is the intricate “herringbone” pattern of its atoms.
“As for Euler's formula, using Tau/2 would: (1) possibly feel more natural, since Tau would be associated with a whole circle, so Tau/2 might more easily be associated with the half-circle through which the number 1 rotates. (2) allow you get the first prime number into the formula, in addition to the other iconic things already there.”
— Doug Fay

Will computers based on quantum physics really change the world?

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

A deadly Ebola outbreak in parts of Africa is raising international alarm. Still, experts stress that the chance of a pandemic is low

The sudden resolution of a well-known conjecture highlights the growing adoption of AI as an assistant in high-level mathematics

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

Denver’s hockey team is studded with stars, but training and playing the game some 5,000 feet above sea level may give their athletic performance a boost over that of their rivals

Totality in the Mediterranean with Clara Moskowitz

The wobbly, lanky arachnids known as harvestmen or daddy longlegs may be overlooked as predators of small vertebrates such as frogs, researchers say

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

This eerily simple math says our days are numbered—and nobody can agree why it’s wrong

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

This year’s expected El Niño could hamper hurricanes in the Atlantic but boost them in the central and eastern Pacific

While drugs such as Wegovy target a single gut hormone, retatrutide is among a new class of GLP-1 drugs that aims at three hormone receptors

Friday’s flight could be the most pivotal test of the Starship megarocket