Here are six ways to build a quantum computer
New high‑resolution map transforms what we know about Roman roads and the Roman Empire
A massive digitization project has nearly doubled the known extent of the first continent-scale road network
Science crossword: At the same time
Play this crossword inspired by the June 2026 issue of Scientific American
Poem: ‘Horseshoe Crab’
Science in meter and verse
The Riemann hypothesis is a million-dollar math problem hardly anyone is trying to solve
The intimidating legacy of the scariest problem in mathematics
Helion Energy is building a fusion power plant. Can its technology deliver?
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
New ways to keep from losing muscle on Ozempic
Ozempic and just getting older take off muscle. New therapies could retain it
Readers respond to the February 2026 issue
Letters to the editors for the February 2026 issue of Scientific American
NASA dreams of a nuclear power plant on the moon. Here’s why
To build its moon base, NASA needs a lot of power
How commercial satellites are changing modern warfare
Commercial satellites can now watch much of Earth in near-real time. Militaries are learning new ways to fool them