Our planet is one in a billion. How incredible, awe-inspiring life is driven by its natural forces - and how we can ensure humans become a force for good. With David Attenborough.
A look at how without volcanoes, there would be no life on Earth. Although destructive, magma from the planet’s molten core builds land, and mineral-rich ash from eruptions fertilises the surface.
How Earth's five oceans connect to form the largest ecosystem on the planet, and how its network of currents supports the health of the seas and marine wildlife.