Since I was a little kid I always wondered what it would be like to swim in a pool of Jello 🤔 | Mark Rober
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Can You Actually Swim in Jello? 🏊‍♂️ | Mark Rober
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Arcade Scam Science - I designed this machine to win the jackpot everytime, but that's not what actually happened! | Mark Rober
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Just how dirty is your pool? 😳 | Mark Rober
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How Dirty is Your Pool? 😬 Knowledge is power! Even if that knowledge causes you to rethink some of those lovely summer memories. | Mark Rober
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Here's how you fill a swimming pool in only 4-seconds! | Mark Rober
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Of the 50 YouTube videos I've made, this one was easily the most fun. …
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