Yellowstone
- Episode aired Jun 21, 2016
![Round Planet (2016)](https://m.media-amazon.com/images/M/MV5BY2JlNTE1NWYtYWU0Ni00M2VhLWFjMDgtYTQ0MjA5MzMxZGExXkEyXkFqcGdeQXVyNzU1OTAzNTE@._V1_QL75_UY281_CR155,0,190,281_.jpg)
Serene as it seems, Yellowstone National Park is more unpredictable than an atom of Radium -226, thanks to the active super volcano below it.Serene as it seems, Yellowstone National Park is more unpredictable than an atom of Radium -226, thanks to the active super volcano below it.Serene as it seems, Yellowstone National Park is more unpredictable than an atom of Radium -226, thanks to the active super volcano below it.