Put on Your Thinking Caps, Kids! It's Time for Mr. Wisdom!.Mr. Wisdom, host of a children's scientific show and Verne's biggest hero, is broadcasting an episode from Hill Valley. Verne and Marty go to meet Mr. Wisdom in person and they end up bringing him to Doc's lab. Doc angrily confronts Mr. Wisdom, explaining to Verne and Marty that Mr. Wisdom was Doc's college roommate and stole one of Doc's inventions to win a science fair. Later, Mr. Wisdom breaks into Doc's lab and steals the DeLorean. Once Doc, Marty, Jules, and Verne find the culprit before landing in the volcano krakatoa in 1883 and overflowing with lava, a crazy contest is held to see who the real scientific genius is...and Verne admires a new hero. Bill Nye Segment: How the Earth revolves around the sun.