Scientific American

An ancient sample shows calcite threading through this material’s cracks and pores, offering possible lessons for making modern concrete last longer

The SpudCell certainly resembles a living cell, but a key structure inside the cell falls short of the real thing

Erythrulose—a sugar found in raspberries—is also prevalent in a giant molecular cloud close to our galaxy’s core, scientists have discovered

This massive dinosaur skeleton sold for more than $50.1 million on Tuesday

What’s the secret to prompting an AI to solve math problems that have left humans stumped? Tell it to believe in itself

A 23-year-old student overturned an ancient conjecture about one of math’s simplest operations

Alpha-gal syndrome is increasing across the U.S., driven by lone star ticks

Start your morning with today’s Spellements. Create as many words as you can from our daily selection of letters—including one tied to recent science news. Play now.

Smoke from northern Minnesota and western Ontario wildfires is pouring over the Great Lakes, mid-Atlantic and Northeast, bringing record levels of hazardous air pollution to major cities

The signature of Sak Tahn Waax, or “White-Chested Fox,” was found inscribed in a 1,000-year-old chamber beneath present-day Guatemala

The White House nominated Erica Schwartz, a former deputy surgeon general, to head the nation’s top public health agency

Scientists have long suspected that this star cluster was a hotspot for a certain kind of black hole. But for decades, they had been unable to spot any

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

Indonesia is building a new capital city in the heart of Borneo to replace sinking Jakarta. As construction transforms one of the world’s most biodiverse rainforests, scientists and their Indigenous collaborators are racing to record the sounds of the forest—and preserve generations of ecological knowledge before it’s lost.

Corn has taken the heat for recent Midwest summer humidity—unjustly, according to corn experts

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

Equipping spacecraft with x-ray machines could boost safety for long-duration spaceflights—like a crewed mission to Mars

Solar eclipses are a rare and brief opportunity for scientists to gather data on everything from the physics of the sun to air pressure in the upper atmosphere

Record-breaking heat waves are beginning to blur together—here’s why and what’s making them so unbearable

Beta Pictoris d is more than twice the size of Jupiter, but it is a baby compared to its humongous neighbors

Hundreds of thousands of scientists, including Nobel laureates, warn that changes to the way federal grants are approved would greatly damage American science

Skygazers are in for a treat in August, as one of the most spectacular meteor showers coincides with a total solar eclipse

Several children who had aggressive recurrent brain tumors remained disease-free years after this treatment, according to an early-stage trial

This climate system is tied to more powerful typhoons, as well as famine and wildfires

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

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

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

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?

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

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

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

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

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

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

Bacteria send protein packages to dormant neighbors to endure antibiotic attack

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