Anthropologist Herman Pontzer spends time living among a Hadza hunter-gatherer tribe in order to see if they burn more calories than a typical Westerner.

Layne Jackson-Hubbard wakes up in a hospital room with a head wound and no memory of how she got there.

When Aparna Nancherla's science fair project goes awry, she and her fellow students make some unethical choices.

Patrick Freeman is studying elephants in Namibia when he receives terrible news.

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.