Mark Rober's CrunchLabsSeason 22026 · 7 episodesEpisodes1Acid vs. Lava Destruction TestIn 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.2Backyard Squirrel Obstacle CourseTo 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.3World's Largest Devil's ToothpasteMark throws an epic birthday party for a deserving teen, complete with record-breaking devil's toothpaste experiment - the first of its kind.4Beating Carnival Scams With ScienceStep 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.5My Domino Robot Broke A World RecordMark'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?6Engineers vs. Extreme Hide & SeekMark has 30 minutes to find all nine product designers hidden inside the CrunchLabs warehouse - and they're allowed to fight back with blasters!7My Experience Building The Mars RoverIn 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.Season 1Season 3Season 4Season 5