Original broadcast date: March 24, 2017. Humans have a capacity to laugh even in the hardest of times. This hour, TED speakers describe how they use humor as a weapon and a shield, to ward off doubt, discrimination, and even depression. Guests include comedians Sandi Toksvig, Maysoon Zayid, Negin Farsad, and Kevin Breel.

Original broadcast date: November 17, 2016. Food is more than nourishment. It's a source of pleasure — and guilt — and an agent of change. This episode, TED speakers explore our deep connection to food, and where it's headed. Guests include community leader Pam Warhurst, food writer Mark Bittman, pediatrician Robert Lustig, experimental psychologist Charles Spence, and entomologist Marcel Dicke.

Highlights from the next episode of Buried, in which Carey Mae Parker 's brother and sister investigate two properties in the Lake Tawakoni area.

Missing people can't advocate for themselves. So, a new group in northeast Texas is aiming to become their voice.

We have a vision of justice as blind, impartial, and fair — but in reality, the law often fails those who need it most. This hour, TED speakers explore radical ways to change the legal system. Guests include lawyer and social justice advocate Robin Steinberg, animal rights lawyer Steven Wise, political activist Brett Hennig, and lawyer and social entrepreneur Vivek Maru.

Missing people can't advocate for themselves. So, a new group in northeast Texas is aiming to become their voice.

For thousands of years, we've searched to answer the question: Who are we? Today, science has brought us closer than ever to the answer. This hour, TED speakers share ideas on what makes us ... us. In a brand new interview, neuroscientist Anil Seth explores how our brains construct our conscious reality--everything we perceive, from objects to emotions. Other guests from the original 2016 episode include biochemist Sam Sternberg, psychologist Steven Pinker, and humorist Ze Frank.

Cities are symbols of hope and opportunity. But today, overcrowding and gentrification are hurting their most vulnerable residents. This hour, TED speakers explore how we can build more humane cities. Guests include architects Liz Ogbu and Vishaan Chakrabarti, writer OluTimehin Adegbeye, former Albuquerque Mayor Richard Berry, and journalist Drew Philp.

Carinne Manning joins Buried creators George Hale and Jerrod Knight to discuss the connections between Carey Mae Parker's neighborhood and a teenage girl who went missing from Hunt County in May 2001.

Carinne Manning joins Buried creators George Hale and Jerrod Knight to discuss the connections between Carey Mae Parker's neighborhood and a teenage girl who went missing from Hunt County in May 2001.