The mother of all catastrophes unleashes earthquakes, tsunamis and volcanic eruptions on the same day, wreaking havoc across five continents. Bill explains why Earth is so dangerous and how destructive forces make life possible on the planet.
Time runs out for humanity when comets slam into Earth. Bill ventures to the outer reaches of the solar system to reveal where comets formed billions of years ago, demonstrating how to detect and deflect them before disaster strikes.
Rising temperatures and worsening droughts cause apocalyptic dust storms that endanger the world's food supply. Bill goes back in time to the 1930s Dust Bowl and demonstrates how to avoid repeating that dark chapter of history.
A powerful solar flare plunges civilization into darkness and chaos. Bill exposes the fragility of the electrical world and investigates how to be better protected.