One Strange Rock: Season 1, Episode 3

1 - 3: Shield

It's a David and Goliath story -- Earth's relationship with its greatest threat: our seemingly benign sun. Hurling devastating particles and deadly radiation at us, the sun is the big violent boss of the solar system. 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 never would have survived. Astronaut host – Jeff Hoffman.