Play a bonus science crossword that ties into even more stories from the September 2026 issue of Scientific American.
Have we finally found dark matter?
The world’s biggest dark matter search saw a particle it cannot explain
Nepal’s deadly debris avalanche is a warning for the rest of the world
Avalanches like the one that devastated parts of Nepal and Tibet are becoming more common thanks to climate change. Here’s where else is at risk
Mathematician discovers how to fold the smallest origami doughnut
How many times do you have to fold a piece of paper to make a doughnut? After decades, a mathematician has determined the most efficient technique
What’s next for NASA’s new Roman Space Telescope?
After a flawless launch, the Nancy Grace Roman Space Telescope is on a mission to solve some of the universe’s biggest mysteries
NASA launches Roman Space Telescope to explore dark energy and distant worlds
NASA’s Nancy Grace Roman Space Telescope is on a mission to probe dark energy, hunt for distant worlds and transform our view of the universe
Dark matter experiment catches quietest neutrinos ever measured
The XENONnT experiment, in its hunt for dark matter, has detected the rare, feeble glow of neutrinos smacking into electrons
How much should a dinosaur cost?
Fossils are selling for tens of millions of dollars at auction. But why are the ancient creatures the hot new thing for the ultrarich?
NASA’s Nancy Grace Roman Telescope launches to space
The Nancy Grace Roman Telescope will probe dark matter and dark energy, discover exoplanets and study stars
Why obsessing over self-improvement could be sabotaging your brain
Our obsession with ‘maxxing’ every aspect of our lives could actually be stressing us out