Why are some people overly generous? On this episode, we visit with a "trail angel" (someone who offers free food, drinks, and encouragement to thru-hikers on long trails), and we explore what makes a person commit acts of altruism for total strangers. (Hint: it's probably not what you'd expect).

This story first aired in 2018, and it won a gold medal for best independent podcast from Public Radio News Directors Incorporated, or PRNDI.

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