Mark wanted to know what it would be like to to bounce on a trampoline with 1,500 water balloons, so he built it, filmed it, and put it in slow mo!
Part 4! It's up to Mark to defend the holidays from package thieves, once again.
Mark built a 7 foot long Super Soaker and set a world record!
Can Mark's squirrels beat his upgraded obstacle course?
Lava vs Lasers - Which Is More Destructive?
Mark takes on Ben Azelart in a series of classic mini-game challenges!
Mark spent 3 years building the fastest puzzle-solving robot known to man!
Mark explains 5 reasons why NASA (National Aeronautics and Space Administration) is important!
Mark & Science Bob demonstrate a series of experiments and scientific demonstrations to make your Summer more fun (and educational!)
Mark added rockets to a golf club to improve his game.
Mark teams up with MrBeast to plant 20,000,000 trees and combat climate change!
Part 5! Porch pirates aren't the only ones who need to fear the Glitterbomb now.
Mark shares the easy and awesome way to bring a glow wall into your home!
Mark challenges Preston to a series of challenges to see who can take home the CrunchLabs Cup!
Mark & Science Bob demonstrate a series of experiments and scientific demonstrations to make your Summer more fun (and educational!)
Mark & Science Bob demonstrate a series of experiments and scientific demonstrations to make your Summer more fun (and educational!)
Mark built a giant, world-record-setting, NERF gun!
Mark learns how to make the most disgusting water drinkable.
Mark took a field trip to Disneyland to prove the power of lasers!
Mark dropped a car on the world's largest trampoline to test the limits of mechanical engineering!