
Engineering Payback
Part 4! It's up to Mark to defend the holidays from package thieves, once again.

Part 4! It's up to Mark to defend the holidays from package thieves, once again.

Mark walks you through 10 of his favorite science fair experiments.

Mark built an air horm large enough to shatter glass

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!)

Can Mark build a sattelite worthy of space travel?

Can Mark's squirrels beat his upgraded obstacle course?

Lava vs Lasers - Which Is More Destructive?

Mark proves it is possible to win "impossible" carnival games with science!

Mark developed an almost foolproof method to beat anyone at Guess Who.

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.

Mark discovers how difficult it is to trick a dog's sense of smell.

Mark tests his pet octopus' survival skills & puzzle-solving abilities

Has anyone been able to defeat Mark's tennis ball cannon challenge?

Mark uses the science of air pressure to make sand act like a liquid.

Mark uses his engineering skills to re-live his childhood Wiffle Ball dreams.

Mark built the world's largest Frisbee launcher! Here's how he did it.

The grand finale! Are lasers really the most destructive thing Mark can get his hands on?

Mark added rockets to a golf club to improve his game.

Mark de-mystifies 7 scientific mysteries you never knew you didn't know!