All episodes

Waste streams are often overlooked, but they hold enormous potential. TreaTech has developed a technology that captures the full value of a broad range of end products - from renewable gas to clean water, salts and minerals - turning waste into valuable resources. In this episode, I chat with Frederic, co-founder of TreaTech, about how the technology works, why it’s a game-changer for the waste treatment industry and how it could help build a truly circular economy. We also dive into the challenges of scaling this approach and what’s next for the company.

Supercapacitors aren’t as well-known as batteries, but they play an important role in the energy storage landscape. Unlike batteries, they can charge and discharge almost instantly, making them ideal for applications that require short, powerful bursts of energy. In this episode, I chat with Lars Stegmann, CEO at CAP-XX, the company behind the world’s thinnest supercapacitors. We explore how the technology works, why it matters for the energy transition and how CAP-XX powers a green transition.

What if we could build without cement? In this episode, one of the world’s most used, yet climate-damaging materials makes an appearance: cement. Gnanli Landrou, co-founder of Oxara, explains how the ETH Zurich spin-off turns demolition waste and clay into clean, circular building materials. With cement-free binders that cut emissions and reduce construction waste, Oxara opens the door to affordable, low-carbon housing. Tune in to hear how the team is building a future that’s cleaner and smarter - without cement.

Enhanced weathering uses finely ground minerals spread on farmland to speed up a natural process: rocks reacting with CO2 to form stable carbon compounds. This process not only captures and stores C02 for thousands of years but also improves soil health and crop yields. Hannes, COO and co-founder at ZeroEx, explains how the company closes the loop in the enhanced weathering space. To issue the right carbon credits, the company models the expected CO2 sequestration potential based on data collected, implements the projects and has each certificate verified. ZeroEx is at an exciting moment in the scale-up journey. Tune in...

What if materials could (almost) magically repair themselves? When I witnessed it firsthand, I thought it was magic - it's "just" science in action. We cover how CompPair is revolutionizing composites with their self-healing technology. CEO Amaël shares how their materials extend the lifetime of composite parts, reduce waste, and unlock new economic opportunities. From aerospace to sporting goods, CompPair’s approach sets the stage for a smarter, more sustainable future in materials science.

What if carbon removal started with the oceans? In this episode, we dive into how Pronoe is restoring the ocean’s power to capture and store CO₂. Founder and CEO Nicolas explains how their automated water treatment systems, placed downstream from industrial sites, reduce ocean acidification and enhance the natural carbon sink—all while using existing infrastructure. By turning return flows into climate assets, Pronoe supports healthier oceans and a cooler planet. Tune in to learn how this ocean-first, asset-light approach could reshape carbon removal at scale.

What if heat could be stored in a compact form? In this episode, we dive into how Cowa is revolutionizing energy storage through cutting-edge phase change materials. The Swiss company enables homes to transition to sustainable storage solutions, making the most out of often limited space. In this conversation with the company's CRO, we dive into the business model, their traction and award-winning technology and what's next for them. If you're interested in storage, watch this hot company!

What if comfort could be climate-friendly? This is the question that Florina Mînzat posed. And she found an answer. As the founder of EcothermiQ, a company bringing passive, low-carbon thermal comfort into our homes, she works to launch smart, easy-to-integrate solutions. EcothermiQ makes it possible to feel good indoors while reducing emissions. Flo also shares the unconventional path that led her to launch a climate tech startup—an unconventional path by her own accord. This is for you if you're looking for inspiration and hope during these turbulent times.

What if new materials power the energy transition? In this episode, we explore the cutting edge of chemical energy storage with breakthrough materials that make storing and releasing energy more efficient, scalable, and sustainable. Maryam dives into her personal journey of becoming a founder and continuously striving for excellence. She shares the science behind Planck, their customers, and how a niche position helps them to provide a lot of value.

What if we could unearth natural hydrogen? In this episode, Emmanuel from Mantle8 shares how they are pioneering the search for the Earth’s naturally occurring hydrogen reservoirs. As a new generation of geologists, Mantle8 uses bottom-up exploration and decades of expertise to unlock this untapped energy source. We discuss the science behind natural hydrogen and why it matters, how Mantle8’s approach differs from traditional approaches and what their secret sauce is. Natural hydrogen is one of the hottest topics in the climate tech industry right now, so this is a conversation you won’t want to miss!