Everest is the highest mountain in the world. And it keeps attracting many climbers, including the most experienced ones. However, it turns out that each year climber have to go up a little longer, as the height of Everest keeps changing! The reason is that the tectonic collision that created the Himalayas 50 million years ago is still happening now. Find out how it's possible. .. Learn more about your ad choices. Visit megaphone.fm/adchoices