Modern Marvels Season 21 Episode release dates & where to watch

1. Adventure Machines

Adrenaline runs high when Adam Richman visits the factory where Yamaha makes ATVs, Waverunners and more. Then, we get an inside look at a company built to get people sky-high in paramotors, as well as amusement park Diggerland USA, a place you have to see to believe. Can mech-suits become the sport of the future? Plus, learn all about a personal submarine built for under-sea sightseeing for two.

2. Heavy Machinery

3. Moving America

Adam Richman explores how a legendary long-hauler meticulously custom-builds each truck at Daimler.

4. Power Tools Finale

Adam Richman visits power tool manufacturing "mecca" Dewalt, where he discovers how they're using cutting edge technology to make cutting edge tools. Then, he goes back in time to uncover how one of America's oldest power tools is still cutting! Next, it's time to recharge as he finds out how power tools have changed the world, from the outer reaches of space to deep under the ocean, to pit crews racing cars and rescue teams racing time.