
Why It Matters
Each episode of Why It Matters breaks down an issue that is shaping our world’s future. Join host Gabrielle Sierra as she speaks with the leaders and thinkers who are facing these questions head on. Fueled by the minds at the Council on Foreign Relations, Why It Matters brings some of the world’s most compelling stories home to you.
Latest episodes

Feb 14, 2025 • 30min
New Podcast Spotlight: The Interconnect
Emerging technologies are transforming international relations and our country’s economy. So how do we connect science and engineering labs with Washington and the world of business?
The Interconnect, a new podcast series from the Council on Foreign Relations and the Stanford Emerging Technology Review, brings together leading minds in cutting-edge technology and foreign policy to explore recent ground-breaking developments, what's coming over the horizon, and the implications for U.S. innovation leadership.
In this featured episode, Stanford Emerging Technology Review Faculty Council Member Mark Horowitz and CFR’s technologist-in-residence Sebastian Elbaum discuss where chip manufacturing is heading, how hardware advances are powering the new artificial intelligence (AI) era, and what the United States should prioritize in order to sustain its leadership in this crucial domain.
Host
Martin Giles, Managing Editor of the Stanford Emerging Technology Review
Guests
Mark Horowitz, chair of the Electrical Engineering Department at Stanford University
Sebastian Elbaum, the Technologist in Residence at the Council on Foreign Relations

Feb 12, 2025 • 36min
Why Climate Matters: Water Scarcity
Fresh water sustains all life, but in many regions, especially arid ones, it is becoming increasingly scarce due to climate change. Aging infrastructure and ineffective policies are only making the situation worse, affecting communities, economies, and even the political stability of some countries. As water shortages intensify, it’s crucial to rethink how we manage this vital resource and develop more adaptable systems that can better withstand the effects of climate change.
This episode was originally released on July 8, 2021.
Featured Guests
Sandra Postel, Founder and Director, Global Water Policy Project
Mark Giordano, Professor of Geography and Cinco Hermanos Chair in Environment and International Affairs, Georgetown University
For an episode transcript and show notes, visit us at https://www.cfr.org/podcasts/water-scarcity

Feb 5, 2025 • 28min
Why Climate Matters: The Arctic
Under international law, the North Pole and the Arctic waters surrounding it are not owned by any country. But this January, President Donald Trump announced his plans to buy the Arctic territory of Greenland, testing the claims of rivals and opening up a greater conversation around who governs the Arctic Circle. On top of these icy tensions, the North Pole is warming. Melting ice caps are opening up new shipping routes and making the region increasingly mineable, generating even more interest from leaders around the world.
This episode was originally released on March 29, 2023.
Featured Guests
Esther Brimmer, James H. Binger Senior Fellow in Global Governance
Jeff Randall, Military Fellow, U.S. Coast Guard
For an episode transcript and show notes, visit us at https://www.cfr.org/podcasts/whats-cracking-arctic

Jan 29, 2025 • 36min
Why Climate Matters: Pricing Climate
In this discussion, Kate Mackenzie, Green columnist for Bloomberg, and Michael Greenstone, Professor of Economics at the University of Chicago, dive into the urgent need for climate pricing mechanisms like carbon taxes. They explore the economic impact of climate change and the struggle against corporate greenwashing amid rising fossil fuel investments. The conversation highlights the crucial role of international agreements like the Paris Accord and the pressing need for regulatory reforms to reshape corporate sustainability and prioritize genuine climate action.

Jan 23, 2025 • 39min
Why Climate Matters: Home Insurance
For decades, U.S. homeowners have counted on property insurance to protect them from catastrophic loss if their homes are destroyed. But last year, private companies pulled their coverage in multiple climate-sensitive states, only months before the fires in Los Angeles and the hurricanes in the Southeast region wreaked havoc. As climate disasters become more frequent, can home insurance hold up?
This episode was originally released on September 27, 2023.
Featured Guests
David Marlett, Managing Director of the Brantley Risk & Insurance Center, Appalachian State University
Nancy Watkins, Principal and Consulting Actuary, Milliman
For an episode transcript and show notes, visit us at https://www.cfr.org/podcasts/could-climate-change-break-home-insurance

Jan 23, 2025 • 52sec
Why Climate Matters
Our editors top picks of Why It Matters episodes on climate.

Dec 3, 2024 • 36min
The Dirty Energy Powering AI
Varun Sivaram, a Senior Fellow for Climate and Energy at CFR, dives into the environmental implications of AI's energy demands. He discusses how AI's growth relies heavily on fossil fuels, posing challenges for clean energy transitions. The conversation highlights the urgent need to mitigate carbon emissions tied to AI development. Sivaram also addresses the U.S.-China energy competition and the importance of integrating climate policy with national security, showcasing the stakes of clean energy innovation in the AI landscape.

Nov 14, 2024 • 37min
Why the World Next Week Matters
Tumultuous events have rocked the last four years: the COVID-19 pandemic, Europe’s largest land war in eighty years, and an escalating Middle Eastern conflict between Israel and Iran-backed forces. On top of that, the United States faces an intensifying geopolitical struggle with China and Russia. Now, U.S. President Joe Biden is running out of time to secure his legacy while the transition to a second Donald Trump administration comes sharply into focus. The U.S. president-elect has been quickly nominating leaders to his cabinet and receiving calls from foreign leaders.
Why It Matters sits down with the hosts of The World Next Week to talk about what the United States–and a closely watching world–should expect in the weeks and months to come as incoming President Trump takes office.
Featured Guests:
Robert McMahon (Managing Editor, CFR)
Carla Anne Robbins (Senior Fellow, CFR)
For an episode transcript and show notes, visit us at https://www.cfr.org/podcasts/why-world-next-week-matters

Nov 13, 2024 • 36min
The New Tech World Order
For most of our history, the realm of international relations was dominated by nation-states. They waged wars and signed treaties through the framework of governance. But today, more so than ever before, tech titans are acting as unilateral decision-makers, upsetting the balance and structure of global power around the world.
Featured Guests:
Rana Foroohar (Global Business Columnist and Associate Editor, Financial Times; Global Economic Analyst, CNN)
Adam Segal (Ira A. Lipman Chair in Emerging Technologies and Director of the Digital and Cyberspace Policy Program, CFR)
For an episode transcript and show notes, visit us at https://www.cfr.org/podcasts/wim/new-tech-world-order

Oct 21, 2024 • 39min
A World Under the Influence
Renee DiResta is an expert on online manipulation at Georgetown, while Nic Newman researches news consumption at the Reuters Institute, and Michael Spikes teaches media literacy at Northwestern. They discuss the significant shift in news consumption as social media influencers gain prominence over traditional outlets. The trio dives into the challenges of misinformation and the evolving dynamics of audience engagement with influencers. They also touch on the impact of foreign influence in U.S. elections and the urgent need for critical media literacy in a complex digital landscape.