Tzeporah Berman: The bad math of the fossil fuel industry | TED Countdown

Ilissa Ocko: The fastest way to slow climate change now | TED Countdown

Jenny Scheinman, Nels Cline and Todd Sickafoose: "A Ride With Polly Jean" / "Ali Farka Touche" | TED

Trebor Scholz: Stuck in the gig economy? Try platform co-ops instead | TED

Jeff Dean: AI isn't as smart as you think -- but it could be | TED

Charlie Puth: "You and I" | TED Countdown

Charlie Puth: "Attention" | TED Countdown

Pardis Parker: I’m tired of people telling me to “grind” | TED

Nithya Ramanathan: The problem of vaccine spoilage -- and a smart sensor to help | TED

Amina J. Mohammed: A new perspective on the journey to net-zero | TED Countdown

Irma L. Olguin Jr.: How to turn around a city | TED

Tanya Berger-Wolf: How your nature photos can help protect wild animals | TED

Chris Bennett: A close-to-home solution for accessible childcare | TED

Solomon Goldstein-Rose: How much clean electricity do we really need? | TED Countdown

Charlotte Degot: A more accurate way to calculate emissions | TED