Sunday Pick: Tech Solutions (#3): How one of China's biggest tech companies is tackling carbon removal (with Xu Hao)
Host Sherelle Dorsey talks with Dr. Xu Hao, Vice President of Sustainable Social Value at Tencent, about how the company is investing in and accelerating carbon removal and decarbonization technologies, particularly in hard-to-abate sectors like steel, cement, and chemicals. They examine the cost and scaling challenges these technologies face, the role of digital tools such as AI, data, and virtual power plants in improving efficiency and cutting emissions, and Tencent's own path toward carbon neutrality and net zero. The conversation also covers Tencent's use of video games for climate education and the need to pursue multiple climate solutions in the face of uncertainty about which technologies will ultimately dominate.
The new era of AI-powered protein design | César Ramírez-Sarmiento
Host Elise Hu introduces TED Fellow and protein engineer César Ramírez-Sarmiento, whose lab in Santiago, Chile uses artificial intelligence to design novel proteins for environmental and therapeutic applications. In his talk and follow-up conversation with TED Fellows Program Director Lily James-Olds, César explains what proteins are, how AI has radically improved protein design success rates, and how enzymes could help address challenges like plastic pollution, mining impacts, and climate change. They also discuss the dual-use risks of AI in biodesign, emerging global regulation and leadership (including Chile and other countries), and how César's artistic background shapes his creative approach to science and public communication.
Tax the rich - and save the planet | Esther Duflo
Host Elise Hu introduces a TED Talk by economist Esther Duflo, who argues that the world's richest individuals and largest multinational corporations should fund climate damage costs through targeted taxes. Duflo quantifies the mortality and financial burden that greenhouse gas emissions from rich countries impose on low- and middle-income countries and proposes a global wealth and corporate tax to raise around $1.7 trillion annually. She advocates sending this money directly to people, especially in poorer nations, to build resilience and create a new grand bargain where rich countries pay climate damages and poorer countries commit to strong climate action.
The hidden cost of buying gold | Claudia Vega
Rainforest toxicologist and TED Fellow Claudia Vega explains how artisanal gold mining in the Peruvian Amazon releases large amounts of mercury, causing severe environmental damage and public health risks locally and globally. She describes the mining process, mercury's toxic effects, and the massive deforestation in Madre de Dios, as well as her work establishing the first mercury lab in the Peruvian Amazon to generate local data for communities, policymakers, and international agreements. In conversation with TED Fellows Program Director Lily James Olds, she discusses working with indigenous communities, changing mining practices, the limits of "green" gold, the need for consumer awareness and traceability, and her fears about fake news and hope in small but real changes.
The best thing that could happen to the energy industry | Matt Tilleard
Host Elise Hu introduces a talk by renewable entrepreneur Matt Tilleard, who argues that the current clean energy shift is fundamentally different from past energy transitions because it is driven by technology instead of fuel. He explains how renewable technologies are less existential, more recyclable, more substitutable, and based on abundant materials, making control of resources and cartels far less powerful than in the fossil-fuel era. Using examples from his work in Africa and a case study in Madagascar, he outlines why the future of energy is likely to be more distributed, shared, and shaped by innovation and manufacturing rather than by those who control fuel deposits.
Sunday Pick: How Texas became America's biggest producer of wind energy | Speed & Scale
Hosts Ryan Pinchasarum and Anjali Grover tell the story of how Texas, long associated with oil and gas, became the largest producer of wind energy in the United States. Through an interview with former Texas Public Utility Commission chair Pat Wood, they trace how public input, bipartisan policymaking, and major transmission investments enabled large-scale wind deployment and cut power-sector emissions by over a quarter, despite growing political polarization around renewables.
How refrigeration took over the world
The episode explores how refrigeration and the modern cold chain emerged, from Gustavus Swift's centralized meatpacking and refrigerated railcars to the scientific work of chemist M.E. "Polly" Pennington, who standardized safe temperatures and built public trust in chilled foods. Hosts and guest Nicola Twilley trace how continuous refrigeration reshaped agriculture, consumer expectations of freshness, women's household labor, and even geopolitical events like war logistics and Irish independence. They also examine the downsides of a cold-dependent food system, including diminished flavor, shifted food waste, and significant climate-warming emissions, along with potential efficiency improvements.
Inside India's astonishing solar revolution | Kanika Chawla
Energy expert Kanika Chawla explains how India transformed an audacious 2014 commitment to install 100 gigawatts of solar power into reality, reaching the goal by February 2025 and unlocking $90 billion in investment and 300,000 new solar jobs. She argues that India's success was driven less by ideology and more by economic logic, backed by innovations in business models, market design, and planning. Drawing on examples from India, Ghana, sub-Saharan Africa, and Kenya, she outlines how planning, innovation, and localization can help developing countries lead an irreversible global energy transition.
How we took on an oil giant - and won | Melinda Janki
Climate justice litigator Melinda Janke explains how she uses existing environmental and liability laws in Guyana to challenge ExxonMobil's massive offshore oil projects. She details several landmark legal victories that restricted permit durations, forced inclusion of global "scope three" emissions in impact assessments, and imposed unlimited liability backed by a parent company guarantee. The talk emphasizes that law is a powerful tool ordinary people can use to hold fossil fuel companies accountable and that the oil industry is more vulnerable than it appears.