7 Things We Don’t Know About the Ocean The ocean covers 70% of the planet, but humans still don’t know very much about it. In this episode, Hank discusses seven mysterious ocean topics. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Why Don’t Country Flags Use The Color Purple? How to Upload Your Mind How Plutonium got us to Pluto What Is This Martian Lake Doing In Canada?! Britains Largest battery is actually a lake Will This Solve Organ Transplant Rejection Forever?