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Estimated from 24 chart positions in 24 markets.
By chart position
- 🇬🇧GB · Science#26100K to 300K
- 🇦🇺AU · Science#8230K to 100K
- 🇳🇱NL · Science#8510K to 30K
- 🇯🇵JP · Science#8510K to 30K
- 🇮🇳IN · Science#1091K to 10K
- Per-Episode Audience
Est. listeners per new episode within ~30 days
63K to 203K🎙 Daily cadence·389 episodes·Last published 6d ago - Monthly Reach
Unique listeners across all episodes (30 days)
210K to 677K🇬🇧44%🇦🇺15%🇳🇱4%+21 more - Active Followers
Loyal subscribers who consistently listen
84K to 271K
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On the show
From 17 epsHosts
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Recent episodes
From SpaceX to City Streets: Who Pays for the AI Data Centre Boom?
Jun 18, 2026
Unknown duration
Extreme Heat Breaks: The hidden climate story behind the World Cup
Jun 11, 2026
37m 31s
The Agency Crisis: Heatwaves, Tony Blair and the Politics of Powerlessness
Jun 4, 2026
34m 57s
Can $30k Change the World? The Power of Climate Giving
May 28, 2026
52m 11s
Can the rules keep up?: Lawsuits, LLMs and the looming oil recession
May 21, 2026
46m 43s
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| Date | Episode | Topics | Guests | Brands | Places | Keywords | Sponsor | Length | |
|---|---|---|---|---|---|---|---|---|---|
| 6/18/26 | ![]() From SpaceX to City Streets: Who Pays for the AI Data Centre Boom? | SpaceX's $1.75 trillion IPO has just created the world's first trillionaire. But for families in Morgan County, Georgia and Boxtown in South Memphis, the AI investment rush seems to look rather different: brown water, diesel fumes, and higher bills.This week, Tom Rivett-Carnac and Paul Dickinson take on the data centre boom - now one of the fastest-moving forces in the global energy system. Why exactly do so many of these buildings need to be situated so close to population centres? And why do the communities that end up hosting them so rarely get a meaningful say?We hear from Nick Reece, Lord Mayor of Melbourne, one of the most vocal city leaders addressing the challenge head-on. He explains the costs and the unrealised promises, and shares his vision for what a genuinely good deal between the tech industry and host communities could look like.What would it take for communities to actually share in the benefits of the AI boom? How do cities avoid a race to the bottom while national governments court the biggest investors? And is the world heading for the same story it has seen before: transformative technology reshaping society, with the legislation catching up 20 years too late?Learn More:🎥 Watch Congresswoman Alexandria Ocasio-Cortez present contaminated drinking water from Morgan County, Georgia at a House Energy and Commerce Committee hearing📋 Read the Southern Environmental Law Center's reporting on xAI's Colossus and how an illegal gas-fired power plant was built in Boxtown⚡ Explore the IEA's Energy and AI report for the full data on how global electricity demand from data centres is set to double by 2030🏙️ See the City of Melbourne's C40 initiative for responsible data infrastructure, co-led by Lord Mayor Reece alongside mayors from nine other cities worldwide🔌 Understand why NERC issued a rare Level 3 alert on the grid stability risks posed by large computational loads that can drop hundreds of megawatts in milliseconds🎙️ Listen to the Volts podcast episode "Why is NERC so worried about data centers?" for a deep dive into the grid engineering challenges Paul raised in this episode🌍 After recording, we remembered there IS a precedent for legislation moving fast enough. Read about the Montreal Protocol🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation:Instagram @outrageoptimism LinkedIn @outrageoptimismOr get in touch with us via this form.Producer: Ben Weaver-HincksPlanning: Caitlin Hanrahan Exec Producer: Ellie CliffordThis 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. | — | ||||||
| 6/11/26 | ![]() Extreme Heat Breaks: The hidden climate story behind the World Cup✨ | climate adaptationextreme heat+3 | — | Count Us In | USMexico+1 | extreme heatWorld Cup+5 | — | 37m 31s | |
| 6/4/26 | ![]() The Agency Crisis: Heatwaves, Tony Blair and the Politics of Powerlessness✨ | climate changepolitics+4 | — | — | UKIreland+3 | heatwavesclimate crisis+6 | — | 34m 57s | |
| 5/28/26 | ![]() Can $30k Change the World? The Power of Climate Giving✨ | philanthropyclimate action+3 | Jennifer Kitt | Climate LeadICJ+2 | — | climate givingphilanthropy+3 | — | 52m 11s | |
| 5/21/26 | ![]() Can the rules keep up?: Lawsuits, LLMs and the looming oil recession✨ | climate lawAI governance+3 | — | ClientEarth | New ZealandGreece+1 | climate lawsuitAI constitution+3 | — | 46m 43s | |
| 5/14/26 | ![]() The Jet Fuel Crisis: What’s next for aviation?✨ | aviationjet fuel crisis+4 | Karel BockstaelRoxanne van Rijn | Call Aviation to Action | — | jet fuelaviation emissions+3 | — | 50m 59s | |
| 5/7/26 | ![]() David Attenborough at 100✨ | David Attenboroughenvironment+4 | David Attenborough | BBCInternational Whaling Commission | Cambridge | David Attenboroughclimate podcast+5 | — | 40m 01s | |
| 4/30/26 | ![]() “This is civilisation changing stuff”: Is AMOC the hardest climate story to tell?✨ | climate changeAMOC+5 | David ShukmanDr Willem Huiskamp | Potsdam Institute for Climate Impact ResearchThe Day After Tomorrow+1 | — | AMOCclimate communication+5 | — | 45m 47s | |
| 4/23/26 | ![]() Beyond the Oil Crisis: What’s actually blocking the transition?✨ | fossil fuelsclimate change+4 | Mary RobinsonVanessa Nakate | First Conference on the Transition Away from Fossil FuelsUNFCCC+1 | IranStrait of Hormuz | oil crisisenergy transition+6 | — | 43m 11s | |
| 4/16/26 | ![]() It’s In Our Blood: Communities vs Forever Chemicals✨ | environmental healthcommunity action+5 | Emily DonovanSarah Alexander | Clean Cape FearMaine Organic Farmers and Gardeners Association+3 | — | forever chemicalsPFAS+5 | — | 42m 43s | |
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| 4/9/26 | ![]() The Health Emergency Hiding in Rising Seas✨ | sea-level risehealth crisis+4 | Ofa KaisamyProfessor Anne Poelina+1 | Lancet CommissionGuardian | — | sea-level risehealth emergency+5 | — | 42m 57s | |
| 4/2/26 | ![]() Forecasting Disaster: A ‘super’ El Niño? And the case for early action✨ | climate changeEl Niño+4 | Andrew Kruczkiewicz | Red Cross Red Crescent Climate CentreColumbia Climate School+3 | — | El Niñoclimate preparedness+3 | — | 36m 37s | |
| 3/26/26 | ![]() Flooded: Is extreme weather shifting the climate front lines?✨ | extreme weatherclimate change+5 | Louis Ramirez | Flooded People UK | Southern AfricaPakistan+3 | extreme weatherflooding+5 | — | 36m 52s | |
| 3/19/26 | ![]() The Iran Crisis and the Price of Oil Dependence✨ | energy crisisoil dependence+4 | Bruce Douglas | Global Renewables AllianceGlobal Wind Energy Council | IranStrait of Hormuz | Iran crisisoil prices+5 | — | 41m 39s | |
| 3/12/26 | ![]() Water, Wildlife, and Climate’s Hidden Trade-Offs✨ | climate crisiswater stress+5 | Christiana FigueresTom Rivett-Carnac+1 | UNFCCCGlobal Optimism+2 | — | climate crisiswater+5 | — | 39m 04s | |
| 3/5/26 | ![]() Who Pays? The Unfair Economics of Climate Finance✨ | climate financeenergy transition+5 | Sri Mulyani Indrawati | World Bank | IndonesiaUnited States+1 | climate financeIndonesia+6 | — | 34m 44s | |
| 2/26/26 | ![]() Catastrophe Apathy: Why understanding the climate crisis isn’t enough✨ | climate crisiscatastrophe apathy+5 | Lorraine Whitmarsh | University of BathBP | — | climate actioncatastrophe apathy+5 | — | 35m 38s | |
| 2/19/26 | ![]() Trump Moves to Dismantle US Climate Law - Now Comes the Legal Test✨ | climate policylegal challenges+5 | Manish Bapna | Natural Resources Defense CouncilEPA | United States | climate changeendangerment finding+5 | — | 45m 53s | |
| 2/12/26 | ![]() Who Wields Power Now?: Money, Movements and the Future of Climate | Who shapes climate action when old systems begin to strain? And where does power really sit - with governments, financial institutions, communities, or individuals?Christiana Figueres, Tom Rivett-Carnac and Paul Dickinson explore climate leadership in a more fragmented geopolitical moment. Picking up the threads from last week’s episode, they ask what happens when multilateralism is threatened - and whether smaller coalitions, subnational actors and civic movements are already stepping in to fill the gap.Because with great challenges, come new opportunities. What might we gain from faster, more focused alliances? Might Indigenous wisdom provide lessons for building fairer, greener economic models? And how can we use the resources we have to support Brazil’s vision for a global mutirão?Learn More:💡 Watch Mark Carney’s speech at the World Economic Forum in Davos🍩 Dive into the concept of Doughnut Economics🏙️ Explore what C40 Cities members are doing across the world📈 Find out more about ShareAction’s work to build a fairer and more sustainable financial system🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation: Instagram @outrageoptimism LinkedIn @outrageoptimismOr get in touch with us via this form. Producer: Ben Weaver-HincksPlanning: Caitlin HanrahanAssistant Producer: Caillin McDaidExec Producer: Ellie CliffordThis 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. | — | ||||||
| 2/5/26 | ![]() Power, Money and Influence: The Hidden Forces Shaping Climate Action | Who really holds power in the climate transition? And how do money, politics, and influence shape the pace of change?In this episode, Christiana Figueres, Tom Rivett-Carnac and Paul Dickinson use some of your most probing questions on the political economy of climate action to unpack what happens behind closed doors and to challenge some of the assumptions that often dominate public debate. What does lobbying actually look like - and is it always a bad thing? What are we talking about when we refer to ‘fossil fuel subsidies’? And in an age of populist politics and shrinking attention spans, can complex climate solutions still cut through? Or are we drifting toward simpler narratives that are easier to sell, but harder to govern?From negotiation rooms to national politics, and the economic systems beneath them, these are the forces both loudly and quietly shaping climate progress. And if we want to accelerate action, we first have to understand where power truly sits.🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation: Instagram @outrageoptimism LinkedIn @outrageoptimismOr get in touch with us via this form. Producer: Ben Weaver-HincksPlanning: Caitlin HanrahanAssistant Producer: Caillin McDaidExec Producer: Ellie CliffordThis 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. | — | ||||||
| 1/29/26 | ![]() The China Pivot: What will Beijing’s climate leadership look like? | World leaders are flocking to Beijing. In the first weeks of 2026, Canada’s Mark Carney, the UK’s Sir Keir Starmer and South Korea’s Lee Jae-myung have all made high-profile visits - an unmistakable signal of global power recalibrating.China’s dominance in clean energy manufacturing is already well established: from solar panels and batteries to wind turbines. The question now is whether this transition remains merely made in China, or whether it is increasingly being shaped and led from Beijing.Christiana Figueres, Tom Rivett-Carnac and Paul Dickinson consider what this shift may mean for the future of climate leadership - and for the institutions, alliances and norms that have shaped global climate cooperation for decades. They’re joined by scholar of China’s political economy and climate governance Yixian Sun, who has recently advised the UK government on their engagement with China. He unpacks the country’s own vision of leadership, its evolving role in the Global South, and the risks and opportunities of an increasingly multipolar climate order.As the world recalibrates around China’s growing role, how does Beijing see itself? And what are other governments actually seeking as they turn towards it? We spoke to the man advising the UK government ahead of Keir Starmer’s arrival in Beijing. 🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation: Instagram @outrageoptimismLinkedIn @outrageoptimismOr get in touch with us via this form. Producer: Ben Weaver-HincksPlanning: Caitlin HanrahanAssistant Producer: Caillin McDaidExec Producer: Ellie CliffordThis 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. | — | ||||||
| 1/22/26 | ![]() Beyond COP: Can Brazil Chart a Path Off Fossil Fuels? | How dependent are we - economically, politically and socially - on fossil fuels? And how do we begin to loosen that grip?As the world reels from geopolitical shocks, multilateral institutions under strain, and the United States’ withdrawal from key climate bodies, Ana Toni - CEO of COP30 - joins the show to discuss what comes next. Both for Brazil’s presidency in this crucial year, and for the wider system of climate cooperation at a moment when the old rules feel increasingly fragile.Christiana Figueres, Tom Rivett-Carnac and Paul Dickinson ask Ana what was achieved in Belém, what fell short, and why the year after the COP may matter more than the summit itself.Are we entering an era where progress is driven not by universal agreement, but by those willing to move first and bring others with them? And could reframing the transition around ending dependence, rather than negotiating targets, change the politics of climate action? 🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation: Instagram @outrageoptimism LinkedIn @outrageoptimismOr get in touch with us via this form. Producer: Ben Weaver-HincksPlanning: Caitlin HanrahanAssistant Producer: Caillin McDaidExec Producer: Ellie CliffordThis 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. | — | ||||||
| 1/15/26 | ![]() What does Trump’s UNFCCC exit mean for climate diplomacy? | What happens when the world’s most powerful country walks away from the system it helped to build?This week, we examine the United States’ decision to withdraw not only from the Paris Agreement, but from the UN Framework Convention on Climate Change itself - alongside dozens of other international bodies. Headlines declared the end of multilateral climate cooperation. But is that really what this moment represents?Christiana Figueres, Tom Rivett-Carnac and Paul Dickinson unpack what has actually been announced - and what it does (and doesn’t) change in practice.They are joined by Sue Biniaz, former US Deputy Special Envoy for Climate Change and one of the quiet architects of decades of climate diplomacy. Sue brings rare insight into whether a US president can legally withdraw from a Senate-ratified treaty, the surprising pathways by which a future administration could rejoin, and what influence the US may still wield as a non-party.Could the absence of the US voice, paradoxically, unlock progress elsewhere? And in a fractured world, where does collective climate leadership now come from?Learn more:🎥 Watch our hosts’ immediate response to the US UNFCCC withdrawal announcement, recorded the day after news broke📰 Read the New York Times profile of Sue Biniaz by Lisa Friedman: Meet the Closer Who Finds the Right Words When Climate Talks Hit a Wall📄 Dive into the Just Security article penned by Sue Biniaz and Jean Galbraith on treaty withdrawal and re-entry 🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation: Instagram @outrageoptimism LinkedIn @outrageoptimismOr get in touch with us via this form.Producer: Ben Weaver-HincksPlanning: Caitlin HanrahanAssistant Producer: Caillin McDaidExec Producer: Ellie CliffordThis 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. | — | ||||||
| 1/8/26 | ![]() Venezuela, Fossil Fuels, and the Year Ahead | The year has barely begun, and already the fault lines of global power are on full display.Christiana Figueres, Tom Rivett-Carnac and Paul Dickinson take stock of a moment that feels both shocking and revealing. The US abduction of Venezuela’s president raises urgent questions about sovereignty, international law, and the enduring grip of fossil fuels on geopolitics - even as the energy transition accelerates. But what’s really driving events in Venezuela? And how can we tease apart the political theatre from the realities of oil markets, military power, and domestic US politics.Later, we ask: what are the big themes, underlying trends and climate stories already shaping the new year? From the possible rise of left-wing populism, to the intensifying battle over who will become the next UN Secretary-General.As 2026 begins, the question is not just what kind of year lies ahead for climate action, but what kind of global order will shape it.Learn more:🛢️ Deep dive into the stats from the US Energy Information Administration on Venezuelan oil production🌐 Read more about the appointment process of the UN Secretary-General.🎧 Listen back to our holiday episodes, Why Beauty Matters in the Climate Crisis and Beginning the Year with Ancestral Wisdom 🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation: Instagram @outrageoptimism LinkedIn @outrageoptimismOr get in touch with us via this form.Producer: Ben Weaver-HincksPlanning: Caitlin HanrahanExec Producer: Ellie CliffordThis 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. | — | ||||||
| 1/1/26 | ![]() Beginning the Year With Ancestral Wisdom | As billions around the world mark the beginning of a new year, many are pausing to ask the same questions: what do we carry forward, and what do we leave behind, as we cross from the old into the new? And as headlines fill with predictions about the rise of artificial intelligence, could a different kind of AI - ‘ancestral intelligence’ - offer insights equal to the depth of the climate and biodiversity crises we now face?This year’s COP saw Indigenous and First Nations Peoples better represented than ever before; but it also showed how far there is still to go to include them in meaningful dialogue. In a conversation recorded at COP30, Christiana Figueres sits down with two Indigenous leaders from different continents and traditions: Mindahi Bastida, from the Otomí-Toltec peoples of Mexico, and Atawévi Akôyi Oussou Lio, Prince of the Tolinou people of Benin. Together, they explore a relationship with the living world grounded in belonging rather than dominance, continuity rather than short-termism, and reciprocity rather than extraction.Tom Rivett-Carnac and Paul Dickinson then join Christiana to reflect on what it means to carry this wisdom into the year ahead. And if the challenges before us are not only technical and political, but also cultural and spiritual, how might that reshape the way we act, decide, and lead in 2026 and beyond?🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipeJoin the conversation: Instagram @outrageoptimism LinkedIn @outrageoptimismOr get in touch with us via this form. Producer: Ben Weaver-HincksPlanning: Caitlin HanrahanAssistant Producer: Caillin McDaidExec Producer: Ellie CliffordThis 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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Chart Positions
24 placements across 24 markets.
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24 placements across 24 markets.



