Scientists warn that the world could breach its 1.5°C emissions limit within just 2-3 years. It’s a scary thought, but across the globe, many are grappling with an even more immediate and visceral reality: the climate crisis is already a health crisis.

From deadly heatwaves to worsening air pollution and climate-related trauma, the health impacts of climate change are escalating. In this episode, Christiana Figueres and Paul Dickinson explore how growing awareness of these challenges is beginning to reframe the conversation, and ask whether this could be the narrative that finally drives faster, more inclusive climate action.

Christiana is joined by former Australian Prime Minister and Chair of the Wellcome Trust, Julia Gillard, who makes the case for why health must become central to climate communication - and why we should be talking about “lives lost”, rather than simply degrees gained.

Meanwhile, Tom Rivett-Carnac drops in from the launch of London Climate Action Week 2025, where health is rapidly emerging as a defining lens.

Learn more

🌡️ See what the Wellcome Trust is doing at the intersection of climate and health

🩺 Read all about the speakers and events at the Conduit’s Climate and The Future of Health, supported by the Wellcome Trust and held on the first day of LCAW

📅 Browse the full London Climate Action Week events listings, featuring over 500 events across London and online

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

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Producer: Ben Weaver-Hincks

Video Producer: Caitlin Hanrahan

Assistant Producer: Caillin McDaid

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.

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

Follow us on social media for behind the scenes moments and to watch our videos:

Instagram @outrageoptimism

LinkedIn @outrageoptimism

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.