To discover why some survivors of trauma experience PTSD and some don't, scientist Rachel Yehuda must convince a community of Holocaust survivors to let her study them.

As a young science reporter at NPR, Science Friday's Ira Flatow accepts a challenge to record what it sounds like to go over Niagara Falls.

While completing a community service requirement in high school, comedian Wyatt Cenac puts a drunk driving simulation to the test.

Neuroscientist Paula Croxson is determined to finish her first open-water swimming race -- despite the dangers.

After his grandfather passes away, Ben Lillie learns the surprising truth about his life -- from Wikipedia.

In grade school, Elana Lancaster gets into trouble when he questions his student teacher's science. 

Skylar Bayer's dreams of a career in scientific scuba diving are put in jeopardy when her heart begins acting strangely.

Aaron Wolfe seeks meaning through labor at a kibbutz dairy farm -- and finds himself tackling some rather unexpected tasks.

When comedian Jo Firestone goes to college, she starts to worry she has an STD -- even though she's never had sex.

While she's 26 weeks pregnant, OB-GYN MaryAnn Wilbur treats a woman who is also 26 weeks pregnant -- and about to go into labor.