S2 E121 min
Acid vs. Lava Destruction Test
In a scientific face-off, Mark goes head-to-head with NileRed and Kevin the Backyard Scientist to find out which is more destructive: acid or lava.
Mark Rober's CrunchLabs
Season 2
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7 episodes · First aired 2026-01-01
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Episodes
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Showing 7 at a time
S2 E220 min
Backyard Squirrel Obstacle Course
To stop the sneaky squirrels from raiding his bird feeder, Mark builds a challenging eight-part obstacle course in his backyard to try and slow them down.
S2 E322 min
World's Largest Devil's Toothpaste
Mark throws an epic birthday party for a deserving teen, complete with record-breaking devil's toothpaste experiment - the first of its kind.
S2 E411 min
Beating Carnival Scams With Science
Step right up and learn which carnival games are actually winnable and which ones aren't, courtesy of Mark... and a friend from the New York Mets.
S2 E514 min
My Domino Robot Broke A World Record
Mark's robot Dom is really good at setting up dominos. But can he fill a warehouse with a mural made up od more than 100,000 of them in just 24 hours?
S2 E614 min
Engineers vs. Extreme Hide & Seek
Mark has 30 minutes to find all nine product designers hidden inside the CrunchLabs warehouse - and they're allowed to fight back with blasters!
S2 E716 min
My Experience Building The Mars Rover
In honor of the historic Perseverance Mars rover landing, Mark talks to some of his old friends at NASA and suits up to see the actual rover up close.