Sound surrounds us, from cacophony even to silence. But depending on how we hear, the world can be a different auditory experience for each of us. This hour, TED speakers explore the science of sound. Guests on the show include NPR All Things Considered host Mary Louise Kelly, neuroscientist Jim Hudspeth, writer Rebecca Knill, and sound designer Dallas Taylor.

Original broadcast date: May 22, 2020. In the past few months, human beings have come together to fight a global threat. This hour, TED speakers explore how our response can be the catalyst to fight another global crisis: climate change. Guests include political strategist Tom Rivett-Carnac, diplomat Christiana Figueres, climate justice activist Xiye Bastida, and writer, illustrator, and artist Oliver Jeffers.

Right now, many kids aren't in their classrooms — but there is so much to learn outside of school as well. This hour, TED speakers explore life lessons that teach us far more than any textbook. Guests on the show include poltician Stacey Abrams, sailor Tracy Edwards, educator Alvin Irby, and LGBTQ rights advocate Ash Beckham.

From prehistoric cave art to today's social media feeds, to design is to be human. This hour, designer Debbie Millman guides us through a world made and remade—and helps us design our own paths.

Original broadcast date: March 20, 2020. Our online lives are now entirely interwoven with our real lives. But the laws that govern real life don't apply online. This hour, TED speakers explore rules to navigate this vast virtual space.

How do we build more trusting and empathetic relationships, even during a crisis? This hour, therapist Esther Perel shares ideas on creating lasting bonds in romance, family, and at work.

Conflict is a part of life. But in a polarized world, reaching a resolution is harder than ever. This hour, TED speakers explore creative and extraordinary ways of approaching conflict. Guests on the show include authors Shaka Senghor and Ebony Roberts, zoologist Lucy King, and radio journalist Jad Abumrad.

Original broadcast date: April 17, 2020. More than ever, we need to make time for joy. This hour, Manoush and TED's Head Curator Helen Walters explore talks that surprise, inspire, and delight.

The summer of 2020 has been overwhelming for most of us. This hour, we hear from four guests—each from recent episodes—who sum up where we've been and offer the wisdom we need for the months ahead. Guests include political strategist Tom Rivett-Carnac, political philosopher Danielle Allen, anthropologist Heidi Larson, and writer and scholar Clint Smith.

Original broadcast date: May 8, 2020. Many of us were taught biological sex is a question of female or male, XX or XY ... but it's far more complicated. This hour, TED speakers explore what determines our sex. Guests on the show include artist Emily Quinn, journalist Molly Webster, neuroscientist Lisa Mosconi, and structural biologist Karissa Sanbonmatsu.