When did Modern Marvels Season 21 Episode 4 air?
Modern Marvels Season 21 Episode 4 aired on August 15, 2021.


HISTORY’s longest-running series moves to H2. Modern Marvels celebrates the ingenuity, invention and imagination found in the world around us. From commonplace items like ink and coffee to architectural masterpieces and engineering disasters, the hit series goes beyond the basics to provide insight and history into things we wonder about and that impact our lives. This series tells fascinating stories of the doers, the dreamers and sometime-schemers that create everyday items, technological breakthroughs and manmade wonders. The hit series goes deep to explore the leading edge of human inspiration and ambition.

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.
Direct answers for episode-level questions and details.
Modern Marvels Season 21 Episode 4 aired on August 15, 2021.
This episode runs for approximately 44 minutes.
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