This informative look at our planet's topography explores the science behind its highest peaks and deepest ocean trenches.

When you buy through links on our articles, Future and its syndication partners may earn a commission. The Mariana Trench is the deepest known point of the ocean, plunging down further than the height ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Scientists sampled fish living in the Pacific's Mariana Trench and trenches in the Indian Ocean. ...