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 ...

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

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

The presidential candidates differ on classroom censorship, school choice, federal funding for schools, and more ...

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

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 ...

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

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

During the summer, leaves appear green because the predominant pigment of photosynthesis, called chlorophyll, reflects green ...

Harris would continue the Biden administration’s landmark climate efforts; Trump would roll the country back to more oil and ...