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Users’ Internet search questions can strengthen echo chambers, even on factual topics, but there are simple ways to lessen the effect

In honor of SciAm’s 180th birthday, we’re spotlighting the biggest “wait, what?” moments in science history.

A new wave of delusional thinking fueled by artificial intelligence has researchers investigating the dark side of AI companionship

The brain’s body map doesn’t reorganize itself after limb amputation, a study found, challenging a textbook idea in neuroscience

After a string of fiery failures, SpaceX’s biggest rocket faces another test flight with sky-high stakes for U.S. space ambitions

The downfall of a long-standing theory in psychology raises a question: How much does the environment we’re raised in change how we literally see the world?

A new analysis uncovers seasonal patterns of dengue, a mosquito-borne disease, across the Americas, which could help scientists anticipate future outbreaks

Money talks louder in some languages than others

Researchers spied a wild array of life, including dozens of suspected new species, in an underwater gorge

The 60-meter asteroid 2024 YR4 has a 4 percent chance of hitting the moon. Could such a lunar collision create a dangerous new meteor shower?

Peanut allergies more than tripled in U.S. kids between the late 1990s and late 2000s, and the prevalence has risen even more since then. Scientists are still searching for answers—and new ways to treat them.

In his latest book, science journalist Peter Brannen argues that CO2 is the most important—and most misunderstood—molecule on Earth

The journal Science has lifted an expression of concern on a paper claiming evidence of Majorana quasiparticles, but concerns linger

OpenAI researchers reveal how their experimental model, devoid of any external aids, powered through hours-long proofs to earn a gold-medal score at the International Math Olympiad—and they discuss the project’s origins and describe how such work could help lead to artificial general intelligence

Hurricane forecasts feature a “cone of uncertainty,” but what is it actually showing? Scientific American breaks it down for you

Everything you need to know about hurricanes explained

Texas may have declared its measles outbreak over, but rising cases elsewhere and the return to school mean it could easily resurge

One-off cases of malaria in the U.S. may become more common as warming temperatures lead to booming mosquito populations

With no fuel or engines, tiny explorers will surf sun-warmed air alone to explore high in the skies of Earth and Mars

People in prisons and jails have contributed to some of the greatest ideas in mathematics