The investigators at Debunked reveal why Mount Everest isn’t actually the tallest mountain on Earth depending on how you measure it.

Everest's peak stands at an impressive 8,849m above the ocean, making it the piece of land at the highest altitude on Earth.

Mount Everest may be the tallest mountain on Earth, but it's nothing compared to the towering giants scattered across our ...

Discover Denali, the highest mountain in North America, with its immense height, complex naming history, challenging climbing ...

The banks of the Dead Sea are the lowest point on dry land but not the deepest point on Earth's surface. That distinction ...

Four climbers went up and down Everest in under a week with the help of xenon gas—a record-breaking ascent that has ignited ...

The latest image, captured on May 2, focuses on Arsia Mons, which is roughly twice as tall as Earth's largest volcano, Hawaii's Mauna Loa, which rises 6 miles above the seafloor.

A dazzling image taken by NASA’s 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking through clouds at dawn on the Red Planet.