In the season finale, Jay confronts the ultimate existential threat: his own doom.

Jay explores the idea that reality is actually a computer simulation. But, if nothing is real, then should anyone try to save the world?

This tiny technology may help to solve major problems, but Jay learns that it also comes with extraordinary risks to the environment.

Jay learns about a terrifying, and growing, problem: insects are dying off and it's humanity's fault. What happens if they become extinct?

Jay is terrified of outer space. Turns out, he's right to be afraid.

A.I. is here. Is it going to take over? Jay finds out how much time remains before society bows down to its robot overlords.