Planet Visionaries

Planet Visionaries spotlights climate innovators who are helping to solve some of the world’s most challenging environmental issues. In each episode, host Alex Honnold, an adventure rock climber and outdoor advocate, will talk to one of those leaders to learn about their work, background and what motivates them to preserve the earth. Listeners will hear from the world’s most renowned ocean explorer, a man who has dedicated his life to protecting penguins, a volcanologist who found a way to predict eruptions and a Peruvian biologist who is safeguarding sea life with the help of coastal communities. Taken together, the podcast will offer an intimate portrait of the diverse and dynamic people who are at the forefront of the quest to keep the planet perpetual.

The climber who conquered the world’s toughest peaks — without extra oxygen

From Everest to Annapurna, Ed Viesturs has summited the world’s highest mountains without supplemental oxygen. Now he joins Alex Honnold for a conversation about the meaning of climbing in the face of climate change.

12-03
30:17

Steve Boyes returns to tell how he’s finding hope on the rivers of Africa

The Great Spine of Africa expeditions are an unprecedented survey of Africa’s rivers. Biologist Steve Boyes and his team are paddling 40,000 kilometers in dugout canoes to gather groundbreaking data on some of the world’s least-explored waterways.

11-14
11:48

What one explorer has learned in a lifetime on the poles

The first woman to solo ski across Antarctica, Felicity Aston knows better than anyone how to survive on the ice. Now she tells Alex Honnold how her latest expedition unlocked new truths about climate change in the Arctic.

10-31
26:05

To save the Amazon, an explorer studies dolphins

The Amazon is the world’s strongest barrier against climate change — and few of its creatures are more important than the beautiful pink river dolphin. 2024 Rolex National Geographic Explorer of the Year Fernando Trujillo joins Alex Honnold to discuss a lifetime protecting this vital mammal.

10-03
23:56

The secrets of a uniquely vibrant reef

Marine biologist Ben Fitzpatrick has spent decades protecting the coastlines and coral reefs of Western Australia. Today he joins Alex Honnold to talk about his ongoing work to conserve one of the ocean’s most precious habitats.

09-05
18:31

Conservationists return with a message of hope

Wildlife photographers Cristina Mittermeier and Paul Nicklen tell Alex Honnold how they’re using storytelling to inspire a new generation of conservationists.

08-22
12:02

To ease thirst, she pulls water from the air

When her country was stricken by drought, Kenyan entrepreneur Beth Koigi developed a machine that uses condensation to produce water. She tells Alex Honnold how this technology can reduce water scarcity around the globe.

08-08
17:13

“Her Deepness” returns to discuss the future of the sea

Since she last spoke to Alex Honnold in 2021, legendary explorer Sylvia Earle has made great progress in her efforts to protect 30% of the world’s oceans by 2030. Now she’s back to explain how Mission Blue’s Hope Spots provide safe haven for sea creatures worldwide.

07-25
11:41

To preserve the Andes, he’s planted millions of trees

Biologist Constantino Aucca Chutas has spent two decades coordinating a continent-wide tree planting effort in South America. He joins Alex Honnold to explain how he’s preserving this magnificent landscape using one very special tree.

07-11
18:32

Using tradition to make clothing sustainably

Fashion touches every person on Earth. Denica Riadini-Flesch, an Indonesian entrepreneur, tells Alex Honnold how she’s reimagining it as a force for good.

06-13
21:08

Season 4 Trailer

Join host Alex Honnold for Season 4 of “Planet Visionaries.” Meet the explorers, scientists and adventurers who are tackling Earth’s biggest climate challenges in this podcast.

05-30
01:14

How protecting bats protects the planet (and us)

Bats play a pivotal role in the well-being of people, ecosystems and the planet. Rodrigo Medellín, Mexico’s “bat man,” tells Alex Honnold how he’s saving several species from extinction.

12-14
25:29

A promising new discovery in the Amazon

A never-before-documented ecosystem in the Amazon coastal area could present new solutions for climate resilience. Explorer Angelo Bernardino explains why.

11-16
22:48

Finding life under Arctic ice

A deep dive into Arctic waters uncovered an uncharted underwater forest. Meet the explorers who found it and hear how this unusual ecosystem contributes to overall ocean health.

10-19
25:15

What ice might reveal about our climate future

A daring expedition to extract a record-breaking ice core could help us prepare for future climate transitions. Hear from the scientist who led the project.

09-22
21:26

Why the Mediterranean needs more protection

Alex Honnold meets two scientists using new technologies to protect the Mediterreanean’s marine life.

08-24
27:04

Live episode: Revolutionizing how we preserve the world underwater

Ocean health is crucial to our planet. Listen to three young visionaries discuss their boundary-breaking conservation of marine ecosystems with Alex Honnold and hear a special appearance from legendary oceanographer Sylvia Earle.

08-02
41:08

A powerful new tool for protecting the ocean

Climate influencers Cristina Mittermeier and Paul Nicklen on how social media is inspiring a new generation of ocean protection.

06-29
21:51

Bringing ecosystems back to life

How Tompkins Conservation is rewilding millions of acres and restoring key species in South America.

06-01
17:01

A new key to climate resilience

Meet the biologist canoeing 40,000km of Africa’s under-researched rivers to solve water and food security concerns for millions.

05-04
19:20

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