The Backyard Scientist and Mark Rober Partner to Test Strength of Oobleck While Giving Grenade Safety Tips

The Backyard Scientist and Mark Rober recently teamed up to test the strength of oobleck (a combination of corn starch and water) and give viewers tips on surviving a grenade blast. The pair put oobleck through some extreme tests by attacking it with a chainsaw, bb gun, and a propane-powered golf ball canon to see if it would behave as a liquid or solid.

For their grenade video, they test whether a person would be safer from a grenade blast on land or under water using balloons filled with a combination of air and water to stand in for humans.