Outrage + Optimism: The Climate Podcast12 Kesä 2025

Hope for the High Seas?: Sylvia Earle and Oceans on the World Stage

World leaders, scientists and ocean advocates are gathering in Nice for the 3rd UN Ocean Conference (UNOC) and hopes are high that progress can be made on some of the many pressing issues facing our seas - from acidification to pollution, and from biodiversity loss to deep sea mining.

Reporting from the summit, Christiana Figueres and Tom Rivett-Carnac ask: can this moment become a true turning point for ocean governance? Central to the agenda is the High Seas Treaty: a long-awaited international agreement designed to protect marine life in the 64% of the ocean that lies beyond national borders. But with more ratifications needed to get it across the line, can its future be secured while the world’s eyes are on Nice?

Later, Christiana is joined by legendary oceanographer and explorer Dr. Sylvia Earle. Drawing on a lifetime of experience beneath the waves, she shares stories, warnings, and a passionate case for protecting the blue lungs of the planet.

This episode features underwater and ocean recordings taken by sound artist and documentarist Louise Romain.

Learn more

⚓ Get the latest news on UNOC from the official website

🌊 Learn more about the High Seas Treaty and track its progress towards 60 ratifications

🐠 Discover Sylvia Earle’s ocean advocacy initiative Mission Blue

🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipe

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Or get in touch with us via this form.

Producer: Ben Weaver-Hincks

Video Producer: Caitlin Hanrahan

Exec Producer: Ellie Clifford

Commissioning Editor: Sarah Thomas

This is a Persephonica production for Global Optimism and is part of the Acast Creator Network.

Hosted on Acast. See acast.com/privacy for more information.

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