The "aliens" of Earth live in the deepest parts of the ocean, and marine biologist Alan Jamieson has the photographs to prove it. Explore the depths with Jamieson as he challenges what you may believe (or have been told) really lies waiting in the world's darkest, most remote waters. A fascinating, bizarre and surprisingly peaceful dive into the...

Victor Vescovo is leading the first-ever manned expedition to the deepest point of each of the world's five oceans. In conversation with TED science curator David Biello, Vescovo discusses the technology that's powering the explorations -- a titanium submersible designed to withstand extraordinary conditions -- and shows footage of a never-befor...