This week, scientists discover a stimulating way to determine a turtle's gender. Also, an Eclipse Chaser helps prepare for this week's total solar eclipse, and Pixar Director Pete Docter takes the Poundstone Personality Psurvey.

Am I Wishing For a Germ Bath?

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."