Class is in session for RT Senior Editor Grae Drake, as she talks to science guy Bill Nye, host of Bill Nye Saves the World. First, she shares a few questions from fans, and gets some straight talk about Star Wars, time travel, and the fourth dimension. Then, Bill tells a joke, and we learn what he’s like without his lab coat, how his book trilogy could help save the world, if he wants to bring back woolly mammoths, and what to watch on his new show!