The Grand Canyon is a gigantic geological library, with rocky layers that tell much of the story of Earth’s history.

A retro-futuristic space truck. A nimble crustacean on wheels. A space-age dune buggy. One will win a multibillion-dollar prize to deploy on a future NASA Artemis mission. But first, we took a ride on ...

Modern astronomy is giving us unprecedented views of the asteroids, comets, and other small bodies that litter our cosmic ...

Step out of a helicopter onto a never-before-seen island in Antarctica’s distant south during this expert-led tour around ...

America’s northernmost state is the perfect front-row seat to the aurora borealis—and this winter will be an extra special ...

Stars and planets are lining up for the change of seasons during the Northern Hemisphere's autumnal equinox this year.

One famous snail’s death highlights the plight faced by diverse Hawaiian snails, of which there were once hundreds of species ...

This vibrant sanctuary underscores the stakes. The world’s wetlands are slipping away. This vibrant sanctuary underscores the stakes.

Legends and rumors trail the elusive Queen of Sheba through the rock-hewn wonders and rugged hills of Ethiopia.

With its clear waters and white-sand beaches, the Maldives has an otherworldly quality to it. This theme continues at the Ritz-Carlton Maldives, Fari Islands, where three beach-fringed islands are ...

Beyond Machu Picchu, these destinations reveal a side of the country that most visitors miss—from volcanic cities and canyon villages to sacred lakes and jungle getaways. As an alternative to visiting ...

The blue supermoon, which is the closest full moon of the year, rises over the Capitol in Sacramento on Wednesday, Aug. 30, ...