This week, former NASA engineer Mark Rober invents the world's largest Super Soaker water gun, along with other projects that make him the Most Admired Man among 7-year-olds everywhere. Also, Comedian Kevin Nealon takes the Poundstone Personality Psurvey to find out what trail snack he'd be.

Who Started the Super Soaker Arms Race?

Paula Poundstone is on a quest to gather all of the world's knowledge. Or, as she puts it, "to get less stupid, one topic at a time." Follow her search as she looks to scientists, researchers, and experts for evidence about everything from what music cats like to the fluid dynamics of spilling coffee. "Every week, we'll keep looking for knowledge," says Paula, "because we know we left it somewhere."

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Who Started the Super Soaker Arms Race?

Who Started the Super Soaker Arms Race?

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