The crystal-clear air and lack of dust and light pollution make the Mauna Kea Observatory Complex the best in the world.

Mauna Kea Observatory Complex

Learn about the telescopes and available tours at Mauna Kea Observatory Complex, where crystal-clear air and lack of dust make it a world-class facility.

Biscuit Basin in Yellowstone National Park.

The Truth About Yellowstone’s Supervolcano

Volcanic activity is not a thing of the past in Yellowstone, but the reality is less terrifying than what you may have heard about on your Facebook feed. Read more to learn about whether or not the park’s infamous supervolcano poses a threat to travelers.

View of a helicopter along the coast with an AirMaui paint job.

Maui Helicopter Rides and Flightseeing Tours

Much of Maui is only accessible by helicopter, and a one-hour flight spent hovering over the island will be the most memorable hour of your vacation. Read on for information about tour operators and helpful tips for your tour, like how to take the best photos.

At the bottom of a steep crater is a lake with water that is emerald green.

Costa Rica’s Parque Nacional Volcán Irazú

The slopes north of Cartago rise gradually to the summit of Volcán Irazú. Read about hiking the trails to see the volcano’s five craters—including the Diego de la Haya crater—and discover information on local restaurants and accommodations.

View from a stone path at the edge of the volcano's steaming crater.

Visiting Volcán Masaya National Park

An easy day trip from Managua, Masaya, or Granda, Volcán Masaya is Nicaragua’s most impressive outdoor attraction: one of the most visibly active volcanoes in the country. Read on to find out what the park has to offer beyond its famous overlook.