During 1986, an unusual thing happened in Cameroon: Lake Nyos exploded, expelling a toxic cloud that killed roughly 1700 people. How could this happen? More importantly, could it happen again? Learn more about exploding lakes in this episode.
Asteroid impacts are inevitable. As they hurtle toward Earth, experts race against the clock to build an effective asteroid deterrent. Will they succeed in time? Learn more about asteroid fighters -- and their plans to save the world -- in this episode.
From hordes of caterpillars in Liberia to the Australian mice plagues, infestations can occur in almost any part of the world. Join Robert and Allison as they explore some of the world's largest -- and strangest -- infestations.