Podcast:BrainStuff Published On: Wed Feb 01 2023 Description: The global ocean covers some 70 percent of our planet, and its depths are still unexplored. Learn about its deepest trenches in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/earth/oceanography/how-deep-is-ocean.htmSee omnystudio.com/listener for privacy information.