Our perfectly calibrated, breathing planet. For those privileged few who have seen Earth from space, the very first thing they notice is the thin blue line of atmosphere that clings to our planet and sustains life. The story of how the Earth creates and regulates that oxygen is mind-blowing. From snowflakes in the arctic to plankton, desert sandstorms, and rivers in the sky; an incredible chain of connections reveal just how incredible our home is. Everything connects so life and planet breathe together.

Earth protects itself from the sun. The David and Goliath story of Earth's relationship with its greatest threat, our seemingly benign Sun. The Sun is the big violent boss of the Solar System, throwing out devastating particles and energy. Without several shields, one generated by our unique planetary core, another by our atmosphere, and a third by our interconnected weather systems… life on Earth would never have survived.