You've probably never heard of me. Maybe you did. I wrote some New York Times bestsellers. I gave a TED Talk. But the reason I'm in your ear now is to invite you to listen to Kelly Corrigan Wonders. We talk to everyone from Bono to Amy Schumer, Spike Lee to Rainn Wilson, Krista Tippett and Bryan Stevenson about purpose, creativity, well-being, and what makes life worth living. Follow and listen to Kelly Corrigan Wonders on the free Odyssey app or wherever you get your podcasts. I

love that aha moment where you learn something new. And to me, that feels so good. And I feel like I'm like a gateway drug dealer of that feeling, especially to kids. Hey,

everyone. It's Adam Grant. Welcome back to Rethinking, my podcast on the science of what makes us tick with the TED Audio Collective. I'm an organizational psychologist, and I'm you inside the minds of fascinating people to explore new thoughts and new ways of thinking. My guest today is Mark Rober. After nearly a decade as a NASA engineer working on the Mars Rover Curiosity team, Mark is now the most followed science YouTuber in the world. He has over 58 million subscribers and 8 billion views. Mark's projects have captured the imaginations of viewers around the world. There's the time he set a record for building the world's largest Nerf gun, or when he created an obstacle course in his backyard to protect his bird feeder from squirrels, or how to deter porch pirates from stealing his packages, he baited them with glitter bombs that explode when packages are open and catch the thief red-handed on camera.

That's what's so cool about being engineers. Like, if something doesn't exist, you can just freaking will it into existence. Like, what a superpower, right?