Original broadcast date: Friday, March 19, 2021. Our senses can only take us so far in understanding the world. But with the right tools, we can dig deeper. This hour, TED speakers take us through the looking glass, where we explore new frontiers. Guests include astrophysicist Emily Levesque, wildlife filmmaker Ariel Waldman, psychedelic-assisted psychotherapist Rick Doblin, and science fiction author Charlie Jane Anders.

New innovations in gene and stem cell technology have the power to shape ecosystems and even change humanity. This hour, TED speakers share the breakthroughs heralding the next scientific revolution. Guests include biochemist Jennifer Doudna, physicist and biotech entrepreneur Nabiha Saklayen, and conservation innovator and biotech entrepreneur Ryan Phelan.

Original broadcast date: June 25, 2021. For centuries, humans have relied on the oceans for resources and food... but even the deepest sea has its limits. This hour, TED speakers discuss how we can save our seas to save our planet.

As part of our series about oceans, we're featuring a special bonus episode from our friends at Gimlet's How to Save a Planet. Hosts Alex Blumberg and Ayana Elizabeth Johnson explore how seaweed and giant kelp can help us address climate change and how fisherman Bren Smith has become kelp's unlikely evangelist. Listen to more episodes of How to Save a Planet on Spotify, including part II of Bren Smith's story. Follow How to Save a Planet and host Alex Blumberg and Ayana Elizabeth Johnson on Twitter. (Warning: This episode contains some explicit language).

Original broadcast date: June 11, 2021. Oceans cover nearly 75% of the Earth. While they seem vast and frightening, they're also enchanting and whimsical. This hour, TED speakers dive into stories of connection — and even love — in the sea. Guests include adventurer Catherine Mohr, marine biologists Marah Hardt and Ayana Elizabeth Johnson and venom scientist Mandë Holford.