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Series SeasonSeason 3 episodes2026
Mark Rober's CrunchLabs
Season 3
No season overview available.
Episodes
Each episode has its own detail page.
Episode 123 min2026-03-16
Lava vs Laser Destruction Test
What's the most destructive substance on Earth? Lava's the reigning champ - but how do lasers stack up? Mark and his friends are about to find out.
Episode 217 min2026-03-16
Backyard Squirrel 2.0 - Bank Heist
Mark ups his backyard obstacle course game to keep four thieving squirrels away from a bank vault full of birdseed and a lifetime supply of walnuts.
Episode 39 min2026-03-16
Building a Liquid Sand Hot Tub
With the right amount of forced air, a hot tub filled with sand can look like a bubbling pot of soup. But how? Mark breaks down the science behind it.
Episode 422 min2026-03-16
This Ball Is Impossible to Hit
Mark uses the magic of engineering to level the playing field in a stacked competition against the world's greatest wiffle ball players.
Episode 521 min2026-03-16
Vortex Cannon vs Drone
Mark explores the possibilities of anti-drone defense technologies with a crew of backyard YouTube engineers... and the world's largest vortex cannon.
Episode 68 min2026-03-16
Glitter Bomb 1.0 vs Porch Pirates
Stolen packages? Not so fast. Mark builds the original "Glitter Bomb" trap to combat porch pirates-and really make them regret their life choices.
Episode 713 min2026-03-16
Engineers vs Food Robots
From cereal and milk to spaghetti and meatballs: Things get messy when the CrunchLabs team cooks up new ways to make Mark's mealtimes more efficient.
Episode 88 min2026-03-16
Mark Rober vs Ninja Kidz
It's not just the Ninja Kidz - it's the whole Ninja Fam! And Mark's challenging them all to a silly series of "Minute to Win It" style challenges.
Episode 910 min2026-03-16
Engineers vs Custom Go Kart Racing
CrunchLabs product designers get 24 hours to build and race their own custom go-karts incorporating engineering know-how-and the element of surprise.
Episode 10
Episode 10
No episode overview available.