Scientific American

The sport supplement is popular among health influencers and athletes, who say creatine can help build stronger muscles and sharper brains—but is it legit?

Other planets have moons, too. Do they get eclipses like we do?

Famed AI wins in Go let human players rethink their moves in a whole new way

New research identifies five distinct sleep subtypes, revealing links between brain patterns, behavior and health

Steel support columns in the Midtown building, which is being converted from offices into apartments, may have been overloaded, experts say

Cyclosporiasis case numbers have skyrocketed from several dozen nationwide in June to now more than 1,000 in the state of Michigan alone

Anthropeum is a daily game that uses the Met’s open-access data to showcase underrepresented art and artifacts

Test your logic and arithmetic daily with 4x4 KenKen®

A recent study in the journal Nature carries cosmos-quaking implications for our understanding of the universe—except a new preprint says that it’s wrong

Billions of emerging insects will likely trigger predator population surges—but some species mysteriously opt out of such bounties

A proposed rule change could expose more Americans to higher doses of radiation from nuclear facilities

A best-yet measurement of one of general relativity’s most mind-boggling effects is “another feather in Einstein’s cap”

A strange class of comet could explain the enigmatic behavior of ‘Oumuamua, the first known interstellar object—and even shed light on how Earth became habitable

Efforts to revive the thylacine and woolly mammoth are forcing conservationists to face a long-overdue debate over what kind of natural world we want to build

The U.S. Preventive Services Task Force is an independent group that offers guidance on what health screenings and medications health insurance should cover

Living at altitudes with less than half the oxygen at sea level, these mice have adapted to their environment in unique ways

A rare eruption in the Indian Ocean let researchers capture one of the clearest views yet of a seafloor spreading event

During World War II, statistics helped the Allies estimate the number of enemy tanks, which proved essential in the decisive move against Nazi Germany

A controversial geoengineering proposal suggests that brightening clouds off South America could weaken a burgeoning El Niño, but major technical and ethical questions remain

This one-ton elephant seal has gone viral for smashing into cars and infrastructure, but biologists have a more poignant explanation for his behavior

To align Coordinated Universal Time with Earth’s rotation, a second occasionally gets added to the year. That may change in 2027

For almost 60 years, a global ban on nuclear weapons in space has held up. But the growing number of satellites and increasing geopolitical tension has scientists worried the moratorium could fail

As rainfall intensifies with climate change, waste flushed out to sea could attract more sharks, putting beachgoers at risk

The exoplanet telescope TESS revealed a distant world using an entirely different detection method than the one it was built around

Female mammals have long thought to be born with all the eggs they would ever have, but new research is challenging that consensus

New archaeology has uncovered everything from musket balls to wig curlers at the site of the Battle of Bunker Hill, the first major clash of the American Revolution

China’s Tianwen-2 aims to collect samples from asteroid Kamo’oalewa and return them to Earth

The space agency has put out a call for its Moon & Mars Exploration Analog, which recreates the challenges of a long-duration space mission

Probing the dawn of the cosmos for clues to how the first galaxies and supermassive black holes formed is no easy feat

Reliance on artificial-intelligence tools degrades the abilities of physicians and software engineers, studies show

Pigeons seem to defy a century-old psychology law about how rewards and consequences help us learn

Training people to pay attention to the right visual cues nearly doubled how accurately they could spot AI-generated faces

A new study claims that the universe isn’t entirely the same no matter where you look—a radical proposal