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PODCAST

Solving for Climate

Data scientist Hannah Ritchie and sustainability nerd Rob Stewart are climate optimists. They join forces to unpack solutions to the climate crisis, and the innovators, entrepreneurs and scientists behind them. Hosted on Acast. See acast.com/privacy for more information.

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All Episodes

29:33

Mina Hasman: Inside the world of sustainable...

Solving for Climate ·

2025/09/30

Sustainability Director at the firm Skidmore, Owings & Merrill makes the case for solutions like algae-based concrete and direct air capture to be used within the buildings she designs.The materials and methods used in contemporary design are a recipe for what are currently very high carbon emissions. Hannah reflects on whether these are just pie in the sky ideas.Season four of Solving for Climate is sponsored by Xlinks xlinks.coPodcast transcripts available on SubstackMina Hasman,

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29:40

Ian McKay: How do we get rid of contrails?

Solving for Climate ·

2025/09/23

Founder of Orca Sciences reveals the surprisingly easy fix for contrails in aviation. As an incubator for other startups looking to get off the ground, Orca Sciences asks big questions like, how do we get rid of ‘sky graffiti’? Can you heat the earth directly? And can we just eat carbon?Season four of Solving for Climate is sponsored by Xlinks xlinks.coPodcast transcripts available on SubstackIan McKay, Founder of Orca SciencesCo-hostsHannah Ritchie, Deputy Editor and Lead Researcher, Our World in

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29:24

Leah Ellis: How do you decarbonise concrete?

Solving for Climate ·

2025/09/16

The CEO of Sublime Systems chats about their alternative to make cement. Generating about 8% of all global carbon dioxide emissions, Leah is using an exciting electrochemical process to reduce this figure. It’s used in the buildings around you, the roof over your head and the foundations beneath your feet - so how difficult will it be to reduce these high carbon emissions?Season four of Solving for Climate is sponsored by Xlinks xlinks.coPodcast transcripts available on SubstackLeah Ellis, CEO

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29:27

Lauri Myllyvirta: Is China a global climate leader?

Solving for Climate ·

2025/09/09

Senior fellow at the Asia Society Policy Institute's China Climate Hub, Lauri Myllyvirta, delivers a deep dive on China’s climate picture. Why is a country responsible for the overwhelming majority of the world’s emissions also scaling renewable energy at lightning speed? Hannah crunches the numbers on whether China’s construction of coal fired power plants comes at odds with their renewable credentials.Season four of Solving for Climate is sponsored by Xlinks xlinks.coPodcast transcripts available

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38:48

Prof Alex Edmans: Does divestment from fossil fuels...

Solving for Climate ·

2025/09/02

Finance expert Professor Alex Edmans is sceptical that divesting from fossil fuels will make an impact and reduce carbon emissions. With his experience on the World Economic Forum’s Global Future Council on Responsible Investing, he chats to Hannah and Rob about how a carbon tax is a no brainer climate solution instead.Season four of Solving for Climate is sponsored by Xlinks xlinks.coPodcast transcripts available on SubstackProfessor Alex Edmans, Professor of Finance at London Business

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39:29

Dr Marit Brommer: Why don’t we use more geothermal...

Solving for Climate ·

2025/06/24

Head of the International Geothermal Association, Dr Marit Brommer, says the world is sleeping on the power of geothermal. Currently, we use it’s energy for less than 0.5% of the world’s electricity. So she’s on a mission to convince governments and businesses about the untapped potential of the heat beneath our feet.Season two of Solving for Climate is sponsored by Xlinks xlinks.coDr Marit Brommer, International Geothermal AssociationCo-hostsHannah Ritchie, Deputy Editor and Lead Researcher, Our

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35:41

Heikki Malinen: Does sustainable aviation fuel work?

Solving for Climate ·

2025/06/17

Neste has been developing an alternative to kerosene for powering planes over the past decade. CEO Heikki Malinen explains how SAF can be used alongside other advancements in aviation technology to reduce carbon emissions that come from flying. But with demand expected to increase, is the industry moving fast enough?Season three of Solving for Climate is sponsored by Xlinks xlinks.coHeikki Malinen, NesteFurther resources:If you want to dig deeper into aviation demand, and pathways to low-carbon

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31:47

Guillaume Lambotte: Inside the race to decarbonise steel

Solving for Climate ·

2025/06/10

Boston Metal are working on an alternative to a millennia old production process. The steel industry is responsible for around 7% of the world’s carbon emissions; decarbonisation is crucial.As Chief Scientist at Boston Metal, Guillaume Lambotte breaks down the chemistry behind their alternative process for making steel. He explains how even though the steel industry will be impossible to change overnight, even a small reduction in emissions could have a positive impact on our planet.Season three of

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34:15

Mark Titley: How do we stop deforestation?

Solving for Climate ·

2025/06/03

As a senior researcher at Trase, Mark uses data like satellite imagery and shipping routes to help companies and governments track supply chains.Trase identifies links to deforestation, but docompaniesactuallyuse this data to make a difference?Season three of Solving for Climate is sponsored byXlinksxlinks.coMark Titley, TraseCo-hostsHannah Ritchie, Deputy Editor and Lead Researcher, Our World in Data @_HannahRitchieRob Stewart, Co-founder and Director of Sustainability, KobaSubscribe to Hannah's

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40:52

Emma Pinchbeck: Will net zero damage the economy?

Solving for Climate ·

2025/05/27

The Chief Executive of the UK’s Climate Change Committee explains how our lives will change by 2050 if we continue to cut carbon emissions. Sheexplains how her electric car is like her 'third child' and why she isn’t recommending we use hydrogen to power transport in the future.Season two of Solving for Climate is sponsored by Xlinks xlinks.coEmma Pinchbeck, the Climate Change CommitteeCo-hostsHannah Ritchie, Deputy Editor and Lead Researcher, Our World in Data @_HannahRitchieRob Stewart, Co-founder

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37:09

Kathleen Alexander: Can you make edible oils without...

Solving for Climate ·

2025/03/25

We use an enormous amount of land for animal agriculture and crops like palm oil. But there’s a new fat on the market which is offering an alternative to dairy and vegetable oils. CEO of Savor, Kathleen Alexander, discusses the company’s synthetic alternative and explains how they designed it to make the perfect pastry. Find out how this was born from a surprising question: Can we not just eat fossil fuels?Season two of Solving for Climate is sponsored by Xlinks xlinks.coKathleen Alexander, CEO of

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38:19

Cat Clifford: Why is nuclear energy back in fashion?

Solving for Climate ·

2025/03/18

Small modular reactors. Nuclear fusion. Artificial intelligence. Senior economics correspondent for Cipher News, Cat Clifford, unpacks the latest innovations in nuclear energy and explains how China is leading the way.Season two of Solving for Climate is sponsored by Xlinks xlinks.coCat Clifford, Senior Science and Economics Correspondent, Cipher NewsCo-hostsHannah Ritchie, Deputy Editor and Lead Researcher, Our World in Data @_HannahRitchieRob Stewart, Co-founder and Director of Sustainability,

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34:42

Zeke Hausfather: Why do we need carbon removal...

Solving for Climate ·

2025/03/11

How much attention should we give to carbon removal technology versus stopping carbon emissions in the first place? Climate scientist Zeke Hausfather discusses the opportunities for carbon removal technologies including advanced rock weathering, direct air capture and ocean storage.Season two of Solving for Climate is sponsored by Xlinks xlinks.coZeke Hausfather, Climate scientist with Stripe Climate, Carbon Brief, the IPCC and Berkeley EarthCo-hostsHannah Ritchie, Deputy Editor and Lead Researcher,

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38:52

Duncan Walker: Will electric air taxis take off?

Solving for Climate ·

2025/03/04

Skyports are building the infrastructure for electric flying taxis that could change the way we travel. You might be able to ride in one in Dubai as early as next year. The CEO of Skyports joins Hannah and Rob to discuss how vertiports could change urban transport. But do their climate credentials stand up?Season two of Solving for Climate is sponsored by Xlinks xlinks.coDuncan Walker, CEO of SkyportsCo-hostsHannah Ritchie, Deputy Editor and Lead Researcher, Our World in Data @_HannahRitchieRob

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38:54

Lauren Eatwell: How do you make shipping sustainable?

Solving for Climate ·

2025/02/25

The maritime industry is responsible for roughly 3% of global emissions. So one solution to help reduce fuel consumption has already set sail. Head of Engineering at BAR Technologies, Lauren Eatwell has steered a project called WindWings which retrofits large steel and glass sails to ships. But will the wider industry move fast enough to meet climate targets?Season two of Solving for Climate is sponsored by Xlinks xlinks.coLauren Eatwell, Head of Engineering at BAR TechnologiesCo-hostsHannah

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3:25

Solving for Climate will return

Solving for Climate ·

2025/01/31

What are carbon credits? Can you eat fossil fuels? Why is nuclear energy back in fashion? Co-hosts Dr Hannah Ritchie and Rob Stewart will answer these questions and more in a new season of Solving for Climate.Season two will be travelling sustainably into your podcast feeds at the end of February. Make sure you’re following the podcast so you are notified when episode one arrives.Season two of Solving for Climate is sponsored by Xlinks xlinks.coCo-hostsHannah Ritchie, Deputy Editor and Lead

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20:45

Dr Luke Haverhals: Making plastics out of plants

Solving for Climate ·

2024/11/28

‘Plastic has long been the fossil fuel industry’s ‘plan B’’ says Luke Haverhals, co-founder of NFW, a start-up dedicated to creating materials with plants, not oil. Plastic has a stranglehold over our lives, but it’s not good for us, and it also keeps the fossil fuel industry in business. Luke is proposing a solution to this - creating four different materials that can be used to make anything from clothes to shoes to furniture, that can return to the earth at the end of their life. Is this the

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21:38

Mark Bjornsgaard: The free heat revolution

Solving for Climate ·

2024/11/21

Data centres are not the most glamorous topic of discussion but they are everywhere, powering our modern, digital economy. But they can also power swimming pools, breweries and laundries, as Mark Bjornsgaard tells Hannah and Rob on this episode. 97% of the electricity that goes into a computer comes out as heat. It’s an incredibly inefficient process, and more often than not this heat isn’t used. So, rather than building these data centres in the middle of nowhere, Mark’s company Deep Green is

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29:40

Dr Sasha Luccioni: The climate cost of AI

Solving for Climate ·

2024/11/14

Despite the inexorable growth of Generative AI tools such as ChatGPT or Midjourney in the past couple of years, painfully little is known - or at least publicised - about their carbon impact. However, Dr Sasha Luccioni is on a mission to change that. Hannah and Rob talk to her about how she’s trying to maximise the benefits of AI, while minimising its hidden climate costs. Why is AI development such a black box? And could AI be part of the solution to the climate crisis?GuestSasha Luccioni, AI and

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25:49

Professor Sir David King: What’s whale poo got to do...

Solving for Climate ·

2024/11/07

How do we buy ourselves some time to save our planet? Humans are responsible for the immense damage inflicted on our planet since the Industrial Revolution, but now we have the chance to do some good and repair the climate. Hannah and Rob discuss the power of human ingenuity and ambition with Founder of the Centre for Climate Repair at Cambridge University, Professor Sir David King. His work finding ambitious solutions to the climate crisis can sound almost unreal. Making clouds brighter to reflect

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22 results

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