Mark & Kevin (The Backyard Scientist) explore the science behind barehanded bottle opening hacks.
Mark & Jesser compete using the world's largest Nerf crossbow!
Mark learned the truth about bed bugs and it's time for you to know!
Has anyone been able to defeat Mark's tennis ball cannon challenge?
Mark built the world's smallest NERF gun, and the outdid himself 4 more times.
Mark explores if it's possible to charge a car using lemons as a battery.
Mark built an air horm large enough to shatter glass
Sometimes a standard car honk is too aggressive, so Mark made his own "courtesy" horn.
Part 4! It's up to Mark to defend the holidays from package thieves, once again.
Mark brings everyone's daydream of swimming in jello to life to see if it's actually possible.
Mark spent 3 years building the fastest puzzle-solving robot known to man!
Turns out that the best defense against drones is air!
Mark shares 10 foolproof tips, tricks, and techniques to beat any escape room puzzle.
Mark uses 200 wallets to test the honesty of cities across the US & Canada.
Mark teams up with MrBeast to plant 20,000,000 trees and combat climate change!
Mark built 5 robots to beat the 5 most popular arcade games.
Part 5! Porch pirates aren't the only ones who need to fear the Glitterbomb now.
Mark & Science Bob demonstrate a series of experiments and scientific demonstrations to make your Summer more fun (and educational!)
Mark's here to help you win your next Moustrap Car race.
This is Dom he's a friendly little robot that's super good at only one thing setting up a butt ton of dominoes really really fast.