Fifteen years ago cosmologists were flying high. The simple but wildly successful “standard model of cosmology” could, with just a few ingredients, account for a lot of what we see in the ...

Gentle nasal spray vaccines against COVID, the flu and RSV are coming. They may work better than shots in the arm ...

Anyone who is capable of seeing the moon (or the sun) near the horizon has experienced this effect. The moon looks enormous ...

Their dream came spectacularly true on that momentous day in 1974. The Lucy fossil preserved skull fragments and a lower jaw ...

Long ago we humans defined a day as the time it takes Earth to make one rotation about its axis, with one sunrise and one sunset. Our predecessors partitioned that day into 24 hours. But if Earth ...

No words are needed for animals to perform all sorts of problem-solving challenges outplay humans in a strategy game New ...

Flex your math muscles with this weekend’s brain teaser. Play now.

Phone apps can tell whether your kid is playing hooky. But remotely surveilling your child might not be great for navigating ...

For the first time, we are sending a spacecraft to explore an alien ocean world—a moon that might host life today ...

To undo this bias, researchers are changing the algorithms and instruments and finding new models to reduce disparities.

There may be no greater demonstration of vaccines’ power to deliver health equity than their success with smallpox. “The ...