Who knew a scientific examination of bookbinding would take us down such a macabre pathway? That's right, books made with human flesh are more common than you could imagine—Alison will explain. Bill tries to make "e Day" a thing, and we'll deepen your appreciation for tardigrades, naked mole rats and octopuses.

Is it a vegan burger or witchcraft? Alison introduces the gang to the meatiest non-meat patty you can sink your teeth into. We ponder Albert Einstein's views on capitalism, Bill assures us the world is indeed getting smarter and Nate pays homage to a man who needs no introduction. It's only science (most of the time). Music: "Marie Curie" by The Crypts

When you shuffle a deck of cards, odds are you've assembled something that no one else has ever assembled, or ever will again. We take a walk around the world and suck droplets from the ocean to discuss the bewildering mathematics of a deck of cards. Then, we've got the scoop on the first image of a black hole, which is expected to be released sometime this year. Also, you have a keen ability to sense when a person is sick—whether through sight or smell. We'll dig into the sense you didn't know you had. And, finally, we play Nate's science metaphor game. Hopefully, we didn't embarrass ourselves.