Solar System
Volcano Worlds
S1 E1:
All around our solar system, volcanoes are powerful shapers of worlds. On Mars is Olympus Mons, a giant volcanic mountain more than twice the size of Mt. Everest. And closer to the Sun, thousands of volcanoes produce the toxic atmosphere that keeps Venus boiling. Discover the explosive forces that molded each of these worlds--and what makes the volcanoes right here on Earth so special. From NOVA.