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Copernicus Sentinel-6B, launched last month, has reached its orbit and delivered its first set of data, which show variations in sea level in the North Atlantic Ocean. This data underlines how the mission will continue to strengthen the long-term reference record of sea levels, a key parameter of climate change.

New laboratory studies could shed light on a rock containing potential signs of alien life that’s stranded on Mars

Sort out a rectangle tangle in this math puzzle

This week marks the last chance for backyard astronomers to see interstellar Comet 3I/ATLAS before it races on its journey back to outer space

If you read enough articles about planets in binary star systems, you’ll realize almost all of them make some sort of reference to Tatooine, the fictional home of Luke Skywalker (and Darth Vader) in the Star War saga. Since that obligatory reference is now out of the way, we can talk about the new “super-Jupiter” that researchers from two separate research teams, including one at Northwestern University and one at the University of Exeter, simultaneously found in old data from the Gemini Planet Imager (GPI).

Inside the desperate rush to save the southern resident killer whales

The sex of many turtles, crocodilians, and other reptiles is determined by the temperature at which their eggs incubate. Global warming could doom them

These three disorders could really be “CKM syndrome,” which can be treated with drugs like Ozempic

Whether space, health, technology or environment, here are the issues in science that the editors of Scientific American are focusing on for 2026

A new generation of household robots could change the way you live

Disruptions in interoception may underlie anxiety, eating disorders, and other mental health ailments

Letters to the editors for the September 2025 issue of Scientific American

Popular supplements with billions of “good” microbes really help only a few illnesses, research shows

Robots are poised to play a much bigger role in daily life at home, at work and in the world

Play this crossword inspired by the January 2026 issue of Scientific American

Science in meter and verse

Psychological data and brain scans show how sleep can improve our lives, our bodies and our relationships

Killer bees; Mars volcanoes