It’s been said that when an elder dies, it’s as if a library is burned. Anthropologist Elizabeth Lindsey, a National Geographic Fellow, collects the deep cultural knowledge passed down as stories and lore.

Dave Isay opened the first StoryCorps booth in New York’s Grand Central Terminal in 2003 with the intention of creating a quiet place where a person could honor someone who mattered to them by listening to their story. Since then, StoryCorps has evolved into the single largest collection of human voices ever recorded. His TED Prize wish: to grow this digital archive of the collective wisdom of humanity. Hear his vision to take StoryCorps global — and how you can be a part of it by interviewing someone with the StoryCorps app.

Secrets can take many forms — they can be shocking, or silly, or soulful.” Frank Warren, the founder of PostSecret.com, shares some of the half-million secrets that strangers have mailed him on postcards.