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Once again, Nate and Calli are bucking the rules of safety as they count down some of the most mind-blowing and dangerous experiments.

The King of Random

Ok, I'm Scared!

Quantities are taken to a new level as Nate and Calli count down their top five favorite experiments that work with crazy amounts of Silly Putty, excessive silly string and more.

How Much is Too Much?

Unexpected results can often lead to breathtakingly cool visuals; from microwaving highlighters to creating a giant green fire tornado, Nate and Calli count down the coolest-looking experiments.

The Cool Factor

Nate and Calli are back with a blazing countdown; these two can't get enough of melting, singeing and setting things alight as they cover their five favorite explosive experiments.

This Countdown is Lit

Sometimes even the experts are surprised by their ingenuity; from duct-tape ladders to a canoe in a can, Nate and Calli count down their top five favorite experiments that had crazy, unexpected results.

Slo-Mo Magic

Unexpected Outcomes

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S1 E3 | This Countdown is Lit