James Cameron emerging from the hatch of Deepsea Challenger - the tiny submarine the director will use to travel to the bottom of the Pacific's Mariana trench Many liken the journey to man's steps ...

"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey ...

Dawn Wright embarked on a historic journey into Challenger Deep, the deepest known point in Earth's oceans. Located in the Mariana Trench, over 6.7 miles beneath the Pacific Ocean's surface ...

In fact, more people have been to the moon than to the bottom of the Mariana Trench. That's because, the Mariana Trench's environment is very hostile. Sunlight cannot penetrate deep water so it's ...

Following is a transcript of the video. Narrator: The Mariana Trench is the deepest point on Earth. So deep that if you dropped Mount Everest inside, its peak would still be more than a kilometer ...

The first explorers visited the trench in 1960 on a brief expedition, after which there had been no missions until Hollywood director James Cameron made the first solo trip to the bottom in 2012.