Homemade slime is sticky, gooey and all the rage, but what is it? When you combine ingredients like glue and laundry detergent you get a strange, flubbery substance. We'll explain what's happening on a molecular level to make this stuff. We'll also hear theories on why so many of us are obsessed with slime. Plus, a brand new slime rap, a mystery sound and some cool facts about snakes.