Leave it to American treasure Tom Hanks and Stephen Colbert to solve life's greatest mysteries.
The duo teamed up for another edition of Big Questions with Even Bigger Stars on the Late Show last night (September 30).
The bigger the questions, the better the answers. From time traveling to Hitler killing and secret service dogs, these two really know it all!
Now if they'd only just team up with Scarlett Johansson - a prior guest on Big Questions with Even Bigger Stars – they could rule the world.
The Late Show with Stephen Colbert airs weeknights on CBS.