Author: Scientific American

Thousands of years ago, a space rock hit what is now China, leaving a bowl-shaped crater some 900 meters wide

Lone star tick bites are the most common cause of alpha-gal syndrome, which causes severe allergic reactions to red meat

NASA’s presumptive next leader wants to outsource more of the space agency’s interplanetary science. The newly launched ESCAPADE mission to Mars offers a sanity check for those plans

The same region on the sun that’s responsible for this week’s stunning auroral display just erupted in another powerful solar flare early on Friday morning

RNA has been extracted from an ancient woolly mammoth, providing insight into its last moments on Earth

The Shenzhou 20 spacecraft was too damaged to bring its crew home from China’s Tiangong space station. Those astronauts have now returned via the Shenzhou 21 craft, leaving its crew without a return ride until the nation sends a new spacecraft to the station

City-dwelling raccoons seem to be evolving a shorter snout—a telltale feature of our pets and other domesticated animals

Data from 11,587 cities show that, rain or shine, some places are just better for bikes and pedestrians

Centuries before other galaxies were known to exist, astronomers called them “spiral nebulas.” Today the defunct term still sparks confusion

From COVID shots to cancer therapy, mRNA is changing medicine.