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What do ice cores tells us about climate change?
What can ice cores tell us about the atmosphere millions of years ago? These cylinders of ice, drilled from glaciers and ice sheets around the world, preserve precious clues about our changing climate and records such as rainfall, temperature and greenhouse gases, even volcanic eruptions. But what can the past tell us about the future? Host Graihagh Jackson hears from two ice core experts about their icy adventures in Antarctica, the Himalayas and beyond.Dr Liz Thomas is Head of Ice Cores Research at the British Antarctic Survey and is currently working on an ice core that may be the oldest ever. Lonnie Thompson is a pioneer in the field whose first ice core finds date back to the 1970s. He is Distinguished University Professor of Earth Sciences. Senior Research Scientist, Byrd Polar Research Center, The Ohio State University. Professor Thompson also appears in a documentary called The Canary.Presenter: Graihagh Jackson Producers: Diane Richardson and Nik Sindle Production coordinator: Maria Ogundele and Sabine Schereck Sound mix: Tom Brignell and Louis Griffin Editor: Simon Watts
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Why don’t we use more geothermal energy?
Geothermal energy is renewable, reliable and powerful. So, why is most of it untapped? That’s what our listener, Anna in the UK, wants to know. Full disclosure, she’s a geologist and is thoroughly perplexed by the lack of uptake. Geothermal is renewable, reliable and abundant and yet, less than 1% of the world’s energy is generated from it. Host Graihagh Jackson hears about a team in Iceland who hope to "super-charge" geothermal power by drilling directly into volcanic magma. And she travels to Germany to visit Vulcan Energy, a company which is combining geothermal with extracting one of the world's most sought-after metals: Lithium. Plus, our reporter in Indonesia tells Graihagh about local opposition to some geothermal power plants. The programme was first broadcast in 2024. Got a question you’d like answered? Email: [email protected] or WhatsApp: +44 8000 321 721 Host: Graihagh Jackson Reporter in Indonesia: Johanes Hutabarat Producer: Osman Iqbal Sound Mix: James Beard and Tom Brignell Editor: Simon Watts
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How does extreme heat affect pregnancy?
Graihagh Jackson and the BBC’s former Global Health Correspondent Tulip Mazumdar investigate how extreme heat, fuelled by climate change, is affecting pregnant women in India. In the southern state of Tamil Nadu, Tulip hears the heart-breaking stories of some of the women affected and explores simple solutions that would make their work in scorching agricultural fields safer. The programme was first broadcast in 2024. Email us at [email protected] Produced by Sophie Eastaugh, Graihagh Jackson and Camilla Horrox Editor: Sophie Eastaugh Sound Engineer: Tom Brignell and James Beard Production Coordinator: Brenda Brown
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Will the switch to green technology become unstoppable?
When people talk about tipping points in the climate, it’s usually bad news – the irreversible melting of ice sheets or the collapse of rainforests. But could there be positive tipping points too, moments where climate solutions break through and spread rapidly?Tim Lenton, Professor of Climate Change at the University of Exeter and author of Positive Tipping Points: How to Fix the Climate Crisis, says it’s already happening – from the dramatic rise of renewable energy to the surge in electric vehicles. He explains how in Norway, the 80s pop band A-Ha played a crucial role in making EVs mainstream.So, could positive tipping points hold the key to addressing the climate crisis? Hosts Graihagh Jackson and Jordan Dunbar speak to Professor Lenton about how positive tipping points happen and what we can learn from them. Got a question? Email us: [email protected] Production Team: Jonathan Baker, Grace Braddock, Tom Brignell, Diane Richardson, Sabine Schereck and Nik Sindle Editor: Simon Watts
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Will there be a solar power boom in Africa?
Africa gets a world beating amount of sunshine — but has just 1% of the world’s solar panels. Over half the continent still lives without electricity, stalling progress and holding back people’s lives. But change may be coming — thanks to a surge in solar imports from China. New data from energy think tank EMBER shows a 60% jump in solar panel shipments to Africa in the past year. If installed, they could generate 15 GW — nearly doubling Africa’s current solar capacity. It’s not just the biggest energy users like South Africa, Nigeria, and Algeria. Countries like Liberia, DRC, Benin, Angola, and Ethiopia have tripled their imports. So, is this the start of a solar-powered revolution on the continent? Hosts Graihagh Jackson and Jordan Dunbar speak to Dr Rose Mutiso, Science Advisor at the Energy for Growth Hub and Founder of the African Tech Futures Lab. Got a question? Email us: [email protected] Production Team: Jordan Dunbar, Nik Sindle, Diane Richardson, Grace Braddock, Chris Gouzaris and Tom Brignell Editor: Simon Watts
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