PODCASTS
Tune in for our monthly podcast with bold pioneers in sustainable innovation, building a greener, smarter, and more resilient world.
LATEST PODCASTS
The Unheated Podcast: Discussion with Ocean Harvesting
March 2025
In this episode of The Unheated Podcast, we sit down with Mikael Sidenmark, CEO & Founder of Sweden-based Ocean Harvesting Technologies, who has spent 17 years pioneering wave energy innovation.We explore their flagship technology, InfinityWEC (Wave Energy Converter), which transforms ocean waves into clean, reliable electricity. While wave power is still an emerging sector compared to solar and wind, it holds unique potential for grid stability and energy security.
The Unheated Podcast: Discussion with Treeconomy
February 2025
This podcast episode features Treeconomy founder Harry discussing how his company is transforming carbon markets through technology. From achieving the first €100/ton carbon removal sale to using satellite technology for precise forest carbon measurement, Treeconomy is setting new standards for credible nature-based solutions. Harry shares their unique approach to balancing environmental integrity with market demands, exactly the kind of innovative thinking that's essential for advancing effective climate solutions.
The Unheated Podcast: Discussion with Safi
January 2025
Kicking off the year 2025 with podcast series focused on visionary founders shaping the future of climate tech! Join us for our inaugural episode featuring Rishi Stocker, Founder of Safi - a Lowercarbon Capital-backed venture revolutionising the recyclables industry through their global B2B marketplace.
The Unheated Podcast: Discussion with Gigascale Capital
November 2024
In the latest episode, Victoria Beasley from Gigascale Capital discusses the firm's innovative approach to climate tech investment. Founded by Mike Schroepfer, former Meta CTO, Gigascale Capital provides strategic support and funding to early-stage climate technology companies. The firm focuses on pre-seed and Series A startups, offering not just capital but deep industry expertise to accelerate climate solutions and drive meaningful progress toward sustainability.
The Unheated Podcast: Discussion with Purnima Gandhi
October 2024
In our latest episode we feature Purnima Gandhi, Board Advisor at Theia Ventures and Director at Temasek, who shares her insights on climate tech investments. Purnima discusses capital stages, emerging sectors, and AI's transformative role in climate technology. Drawing from her experience at Temasek and Citigroup, she offers a unique perspective on the intersection of finance, technology, and sustainability, while highlighting the importance of diversity in the sector.
The Unheated Podcast: Discussion with Climate Aligned
September 2024
Krista Tukiainen, CCO and Co-Founder of ClimateAligned, is revolutionising how finance integrates climate data by offering customisable, transparent green assessments of financial securities. In the latest episode of The Unheated podcast by Theia Ventures, Krista discusses how ClimateAligned simplifies green assessments for financial professionals, accelerating climate investing and financing by 100x. Krista Tukiainen shares her insights on how ClimateAligned is simplifying green assessments for the financial industry, the strategic importance of customisable climate solutions, and their role in accelerating sustainable finance.
The Unheated Podcast: Discussion with Carbon Equity
August 2024
Liza Rubinstein is the Co-Founder and Head of Impact at Carbon Equity, a European fund-of-funds platform that empowers investors to support climate tech companies with low minimum investments. Under Liza’s leadership, Carbon Equity manages a handpicked portfolio of funds, such as Energy Impact Partners and Ara Partners, prioritising both environmental impact and financial success. In the latest episode of The Unheated podcast by Theia Ventures, Liza discusses Carbon Equity’s mission to democratise climate tech investments and create scalable solutions to the climate crisis, paving the way for a sustainable future.
The Unheated Podcast: Discussion with Wavemaker Impact
July 2024
Steve Melhuish co-founded Wavemaker Impact to address the urgent need to combat climate change by creating a venture builder fund focused on reducing greenhouse gas emissions by co-founding, building, and investing in "100x100" ventures—companies designed to mitigate 100 million tonnes of greenhouse gas emissions and generate $100 million in revenue. In this episode Steve discusses the significant opportunities in Southeast Asia, the strategic construction of their portfolio, and the meticulous efforts in measuring the amount of carbon abated. Partnering with seasoned entrepreneurs and business builders, the venture builder promotes sustainable and resilient business models, addressing critical environmental challenges and paving the way for a greener, more sustainable future.
The Unheated Podcast: Discussion with FootprintLab
July 2025
In this episode of The Unheated Podcast, we sit down with Janet Salem, founder of FootprintLab and former sustainability lead at the United Nations, to explore a big question: what if every time you spent money, you could see the carbon footprint of that purchase?
Janet spent 17 years working in Vienna, Paris, and Bangkok on global sustainability and circular economy policies. She has a background in environmental engineering, holds both a bachelor’s and master’s from UNSW Sydney, and was awarded the 2022 Ada Lovelace Medal for Outstanding Engineer. Today, she’s back in Sydney doing a PhD at the University of Sydney while building tools that bring carbon transparency into everyday finance.
We talk about why current carbon tracking tools often miss the mark, how fintech could help people and businesses take real climate action, and the risks that come with showing carbon data — including greenwashing and unintended consequences.
The Unheated Podcast: Discussion with Focal
June 2025
In this episode of The Unheated Podcast, we sit down with Raj Tilwa, co-founder of Focal, to explore how outdoor heating can be reimagined for a low-carbon future. Focal’s all-electric, AI-powered heaters warm people—not the air—cutting emissions while improving comfort in hospitality spaces.
Raj brings experience from Deloitte, the Global Shapers community, and Stanford’s MBA program. Since co-founding Focal in 2021, he’s been focused on building climate-conscious hardware that delivers both energy savings and a better guest experience.
Together, we dive into smart electrification, scaling climate tech, and using energy more effectively without compromising comfort.
The Unheated Podcast: Discussion with PHNX Materials
May2025
In this episode of The Unheated Podcast, we sitdown with Krish Mehta, co-founder of PHNX Materials, joins us to unpack one of climate tech’s most overlooked opportunities—coal ash. PHNX is turning this industrial waste into something valuable by extracting critical minerals and producing low-carbon cement material.
Krish brings experience from Tesla, McKinsey, Stanford, and Wharton, and has been named to the Forbes 30 Under 30 list.His co-founder Jorge Osio-Norgaard, PhD completed his postdoctoral training at Stanford as a specialist in cement chemistry and brings deep technical expertise to their mission of circular innovation. He’s also an NSF Graduate Research Fellow, GAANN Fellow, and ASEE eFellow.
Together, they’re rethinking waste, strengthening supply chains, and building climate solutions that scale.
The Unheated Podcast: Discussion with 2150
June 2024
Tune into the fifth episode of the series, featuring Rahul Parekh from 2150, a UK-based property tech fund, with a strong focus on urban technology, the built environment, and sustainability. The fund priorities early-stage companies that innovate in the design, construction, and powering of cities. Rahul speaks about how 2150 particularly focuses on ventures that can achieve significant reductions in carbon emissions—aiming for those capable of cutting down emissions by a billion tons annually—while also being commercially viable.
The Unheated Podcast: Discussion with the Engine
May 2024
Tune into the fourth episode of the series, featuring Michael Kearney from Engine Ventures, an early-stage fund backing tough tech startups building technologies and unlocking massive opportunities in climate change, human health, and advanced systems. Engine Ventures is based out of Boston and have invested in 50 companies so far of which 26 are in climate technology.
The Unheated Podcast: Discussion with Powerhouse
April 2024
Tune into the third episode of the series, featuring Marie Thompson from Powerhouse Ventures, a seed-stage fund backing startups building innovative software to decarbonize global energy and mobility systems. Powerhouse is based out of Califonia and invests in Europe and the US region. They have invested in 35 innovative emissions-mitigating start-ups so far.
The Unheated Podcast: Discussion with Pale Blue Dot
March 2024
In the second episode of the Unheated Podcast where we hosted Hampus, General Partner and Co-Founder of Pale blue dot, a leading European climate tech fund, to delve into the fund's strategy for combating climate change through innovative investments.
We uncovered how the fund selects and supports startups poised to make a significant climate impact. Hampus also shared insights into the challenges and triumphs of driving change within climate-tech investments, the future of green technology, and the vital role of investors in shaping these ventures. Whether you're an entrepreneur, investor, or someone passionate about the planet's future, this episode will offer a unique perspective on the power of climate technologies to alter the course of our environmental crisis.
The Unheated Podcast: Discussion with Carbon 13
February 2024
Tune into the first episode of the series, featuring Nicky Dee and Catherine Fraser from Carbon13, a UK-based climate venture builder that has built and invested in 60+ innovative emissions-mitigating start-ups so far, across sectors including chemicals, agriculture, renewable energy, the built environment, food and materials.
The Unheated Podcast: Discussion with AirZyme
April 2025
In this episode of The Unheated Podcast, we sit down with Roshan Pursharifi, Co-Founder and CEO of AirZyme, a company developing Bio-Direct Air Capture (Bio-DAC) technology to fight climate change. Inspired by how our lungs naturally process gases, AirZyme uses enzymes to pull CO₂ from the atmosphere with lower energy and higher efficiency than traditional carbon capture methods. We dive into how their nature-based approach could make carbon removal cheaper, scalable, and a vital tool in reaching climate targets.