What is time? Why do we have it? How come we're so bad at comprehending how it passes? Does time fly? If you're bored, does it slow down?

Sean Carroll at Johns Hopkins University, author of "The Biggest Ideas in the Universe: Space, Time, and Motion," spends some time answering Mikes big questions. 

And what about boredom and downtime? James Danckert, author of "Out of My Skull: The Psychology of Boredom," and Dr. Sandi Mann, author of "The Upside of Downtime," explain the two. 

Got questions? Email Mike at [email protected]