02:39 — Experts take a look at the strategies a hostile alien race might use to conquer planet Earth in this bonus scene from "Alien Invasion."
02:29 — What would happen to our planet if it was pulled into a massive black hole? The experts discuss in this bonus scene from "Black Hole."
Cast & Details
- Premiered: September 30, 2016
- Rating: TV-PG
- Premise: Program examines the possibility of different calamities that could wipe out the human race.