You need to be logged in to mark episodes as watched. Log in or sign up.
Season 2017
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x16
The World's Strangest Borders Part 3: Enclaves and Exclaves
Episode overview
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x22
What the Most Northern Town in America is Like (Barrow)
Episode overview
This episode has no summary.
This episode has no summary.
2017x23
What If Republican and Democrat States Were Separate Countries?
Episode overview
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x28
This Is What Will Happen in the Next 100 Trillion Years
Episode overview
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x35
What Happens If You Drop a Nuclear Bomb Into a Hurricane?
Episode overview
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x37
Why Only 1 Gram Of This Material Is Worth $25 Billion Dollars
Episode overview
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x40
What the Most Powerful Magnet in the Universe is Capable of: Magnetars Explained
Episode overview
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x42
What Happens to You if You Upload Your Mind to a Computer?
Episode overview
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
This episode has no summary.
2017x45
What If Earth Started Spinning Twice as Fast Right Now?
Episode overview
This episode has no summary.
This episode has no summary.
2017x46
Why It Might Be Impossible to Sink This $13 Billion Ship
Episode overview
This episode has no summary.
This episode has no summary.
2017x47
Here is the Safest Place to Hide During a Zombie Apocalypse
Episode overview
This episode has no summary.
This episode has no summary.
2017x48
Season finale
Why We May Not Be Able to Visit Space in the Future
Episode overview
This episode has no summary.
This episode has no summary.
If there are missing episodes or banners (and they exist on TheTVDB) you can request an automatic full show update:
Request show update
Update requested