Science Expert Kevin Delaney Blows Jimmy Fallon's Mind With These Fun Experiments

"Don't try this at home."

Whoever said science can't be fun obviously hasn't met Kevin Delaney.

The science expert visited The Tonight Show on Friday, and his experiments were on fire — literally. Delaney, host of the new Science Channel series Street Science, has appeared on the show previously to explode ping-pong balls, launch Alka-Seltzer rockets, and more.

This time, Delaney kicked things off by dunking balloons in liquid nitrogen. He and Jimmy watched them shrink as the carbon dioxide molecules got closer together — only to expand again once they were taken out. After that, he invited the host to help him create a psychedelic painting using phenyl oxalate ester and hydrogen peroxide, the chemicals used in glow sticks.

But the highlight of the segment has to be when Delaney set Jimmy and The Roots' hands on fire using soapy water to protect their skin. "Don't try this at home," he warned before lighting them up. Jimmy's face says it all.


Delaney's amazing demonstrations can be seen at the Museum of Discovery in Little Rock, Ark. Delaney has a background as a playwright and performer, so he definitely knows how to put on a show. According to the Science Channel website, he became interested in "combining his storytelling skills with his scientific curiosity" while developing educational programs at a zoo.

Watch all the fun in the video below:


Subscribe to our newsletter and get the latest news and exclusive updates.