The Impact Equation

This is the first episode in our second series, Scaling Tomorrow's Social Unicorns, with 100x Impact. Rhea Yadav leads impact and strategy at Wysa, the AI-led mental health platform that has supported more than 7 million people across 95 countries. She founded the organisation’s impact business and now works across governments, health systems, NGOs and employers to take evidence-based mental healt...

In their latest wash up episode, Adam and Rafi reflect on recent episodes to explore how systemic change happens at a local and global level. They discuss the "triumph of place-based localism" through Simon Case’s work in Barrow and Claudine Blamey’s community-led flood resilience at Aviva, emphasizing that impact is most effective when rooted in the reality of people's lives. They examine the pow...

What does it really take to deliver humanitarian aid in the world’s most fragile places? In this episode of The Impact Equation, we sit down with Madlin Sadler, Chief Operating Officer at the International Rescue Committee - an organisation working at the sharpest edge of conflict, disaster and displacement. Madlin offers a rare, inside view of what it means to operate in over 40 of the world’s mo...

Edward Timpson is the former Children’s Minister, part of the family behind Timpson, and brother of Lord James Timpson, now a Labour prisons minister. In this conversation with Rafi’s former Ministerial boss, Edward reflects on growing up in a family that fostered more than 80 children, alongside one of the UK’s best-known family businesses, recognised for both its high street services and a cultu...

Luke Leslie is the co-founder and CEO of Key Carbon, investing directly into businesses generating high integrity carbon credits, from clean cooking stoves in sub-Saharan Africa to regenerative agriculture in Europe and mangrove restoration in Myanmar. Luke explains how Key Carbon has borrowed from royalty and streaming models used in mining, then adapted them for carbon markets. The result is a m...

In this episode, Rafi sits down with Claudine Blamey, Chief Sustainability Officer at Aviva. Claudine’s story starts far from the boardrooms of British business. She arrived in London from Tehran as a child, speaking no English. That experience shaped a mindset that has stayed with her throughout her career: nothing is forever, and even the most complex situations can be navigated. Three decades l...

This episode we're joined by Summer Kennedy for a special episode looking back at our first series with Fast Forward. In this series, we’ve featured three amazing entrepreneurs backed by Fast Forward, a trailblazing accelerator backing tech nonprofits solving urgent, global problems at scale. Summer quite literally drives Fast Forward forward; shaping the strategic vision and building the sys...

This episode we're not joined by Ed Davey, the leader of the Liberal Democrats, but a pioneer on forests, agriculture and food security who has worked all over the world, from Tibet to Yemen and Colombia. With roots in social justice and anti-poverty campaigning, Ed cut his teeth in efforts around debt, poverty, and development with organisations like Oxfam and the wider Make Poverty History movem...

Lord Simon Case served four British Prime Ministers as head of the UK's civil service from Boris Johnson in 2020, to Liz Truss, Rishi Sunak and Sir Keir Starmer. Lord Case held the most senior civil service role just as the government hit a run of shocks: Brexit implementation, Covid, war in Europe, economic turbulence, and rapid technological change. In this episode, he’s candid about what it fee...

Alyssa Gilbert sits in a rare seat in UK climate innovation: translating world-class science into ventures that can survive the messy reality of markets, regulation, pilots, and procurement. In this episode, Alyssa shares what Undaunted at Imperial College London looks for at the earliest stages, why credibility and communication matter as much as the tech, and what actually helps founders move fr...

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This episode is the first in our series with Save the Children Global Ventures, the impact investment arm of Save the Children, backing bold entrepreneurs tackling some of the world’s toughest challenges. In the first episode of the series, we’re joined by Fred Carpinteiro, Founder and CEO of Amparo Prosthetics, a company reimagining prosthetic care for people with limb loss across the world. Ampa...

In our latest episode of The Impact Equation, we’re joined by Dominic Hofstetter and Ivana Gazibara from the Transcap Initiative, an NGO focused on developing and scaling systemic investing. Most of us start with a pool of capital and ask: what can this money do? Dominic and Ivana flip it: start with the challenge, diagnose the system, then “reprogramme” how money flows to multiple initiatives at...

In this episode, we go deep into chemistry and mining with Paul Needham, CEO of ARCA, a company using carbon mineralisation to turn mine waste into giant, permanent carbon sponges. In 2025, Arca signed a 10-year deal with Microsoft to remove 300,000 tonnes of carbon from the atmosphere. Certain rocks naturally react with CO₂, pulling it out of the air and locking it away forever as stone. ARC...

Carbon markets tend to trigger strong reactions. For some, they’re a vital bridge - a way to fund climate action at scale while the harder work of reducing emissions catches up. For others, they feel like a distraction, or worse, a way of outsourcing responsibility. So rather than arguing for or against them, we wanted to ask a different question: What would it take for carbon markets to actually...

What if the way we think about money is fundamentally wrong? In our latest episode of The Impact Equation , Rafi and Adam sit down with Hans Stegeman, Chief Economist at Triodos Bank - one of the few banks where sustainability isn’t a bolt-on, but the organising principle. Hans’s central critique is this: we haven’t just chosen economic growth - we’ve hard-wired it into everything. Our markets, fi...

In this episode, GSG Impact CEO Elizabeth Boggs Davidsen joins the show to share her journey from being mentored by Madeleine Albright to leading global efforts in impact investing. Drawing on her formative years working in conflict zones like Sudan and Afghanistan, Elizabeth explains how those experiences shaped her belief that traditional aid isn't enough and that we need new models to drive cha...

This podcast episode features Gaia Vince, a trailblazing journalist, broadcaster, and award-winning author, discussing the profound intersections of climate change and human migration. In this episode, Rafi explores Vince’s career shift from science journalism to documenting the "front lines" of our changing planet, culminating in the urgent thesis of her latest book, Nomad Century . You can buy h...

Across the previous seven episodes of The Impact Equation , we spoke with Charlotte O'Leary, Nick Wise, Lucy Heller, Stephen Cowan, Lord Browne, participants in the Mining Roundtable, and Tiffany Yu, exploring how lasting impact is built at scale across finance, oceans, education, cities, energy, extractives, and disability rights. Together, these conversations examined the tension between idealis...

In this episode, Rafi is joined by Tiffany Yu—a fierce disability advocate, entrepreneur, and changemaker whose work is reshaping how the world understands disability. As the founder and CEO of Diversability, Tiffany has built a thriving global community empowering disabled voices and fostering real inclusion. From a life-changing injury in her childhood to becoming a powerful force on the global...

This episode on The Impact Equation , we dive into one of the biggest tensions of the clean energy transition: the world wants an affordable, renewable future - yet achieving it requires a massive increase in critical minerals like copper, lithium, nickel and cobalt. So how do we mine what we need responsibly, safely and sustainably? To explore this, we bring together Ro Dhawan (CEO, ICMM), Kirste...

Lord John Browne was born just after the war in Hamburg to a Hungarian mother who survived Auschwitz and a British father who was a professional soldier. His parents met because his father needed an interpreter; she spoke six languages because, as she said, “in Hungary no one spoke your language, so you learned many.” From that unlikely beginning came a child who travelled the world, was pushed in...

This is our second live podcast at EdCity, with our friends at Ark. Stephen Cowan, Leader of the London Borough of Hammersmith & Fulham, has been a force in local public service since 1998, when he was first elected as councillor for Grove Ward. Since becoming Leader in 2014, he’s driven some of the most ambitious, people-centred policies anywhere in the UK - from free adult social care, to fr...

The first of two podcasts recorded live at EdCity. We kicked it off with an amazing guest, Lucy Heller, CEO of Ark and the architect behind one of the most influential education transformations in the UK. Ark began in 2002 with a bold ambition: change life chances for children who need it most. Under Lucy’s leadership, that ambition has become a movement — growing from a single turnaround school t...

In this episode we speak to Nick Wise , Founder & CEO of OceanMind , an organisation using AI and satellite analytics to protect our oceans. Nick is a pioneer in applying advanced technology to build more sustainable food systems , tackle illegal fishing , and bring transparency to some of the world’s most complex supply chains. Before founding OceanMind, Nick spent his career at the intersect...