Molten metal, gigantic impacts and volcanic eruptions. Secrets unlocked from deep within the Earth reveal how life is able to exist on its surface. 

Stories:

Earth’s core- Protecting life on earth from the suns deadly rays

The Big Impact- Big enough to knock Earth off its axis, form the moon and create the seasons

Volcanic Hawaii- What forces created these islands, and how does it threaten to rip them apart

Chicxulub Asteroid- it ends life on earth, but creates an underwater wonderland

Son Doong Cave- the greatest cave below the earth as seen through a photographer's lens

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