Link to Wonders of the solar system: 4- Dead or alive documentary
Documentary Description
Brian Cox compares the geography of Earth and Mars to understand why
life is abundant on this planet, while its neighbour is a geologically
dead desert world of ice and dust. Investigating the importance of size,
he contrasts the Grand Canyon and Hawaii's Mauna Kea mountain with the
27km high Olympus Mons peak on the Martian surface and studies why Venus
- so often called Earth's twin planet - was made barren by huge
volcanic eruptions