Mount Everest is indeed the world's highest mountain, with its peak standing at 8,849m (that's 8.8km) above the ocean.

Do you ever wonder how we measure the height of the tallest peak on Earth? Standing at an awe-inspiring 8,848 meters (29,029 ...

If I was to climb a really tall mountain, like Mount Everest, the tallest mountain in the world, I might also need an oxygen mask. That’s because the higher you go the thinner the air becomes.

When Carlos Soria leaves his house to train in the mountains outside Madrid ... oldest person to have reached the summit of the world's 14 highest peaks - all of which surpass 8,000m (26,247ft).

The Smoky Mountains of North Carolina and Tennessee are the tallest mountains in the Appalachian chain, hosting the world's greatest diversity of plant, animal, and insect life of any region in a ...

If I was to climb a really tall mountain, like Mount Everest, the tallest mountain in the world, I might also need an oxygen mask. That’s because the higher you go the thinner the air becomes.