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Between Data and Risk is for founders who are actually building something. After nearly 50 episodes on data, risk, and business ops with corporate leaders, we shifted focus—because the stories that stuck weren’t about scale. They were about the early days, when everything’s uncertain and nothing works yet. Now we talk to founders making real decisions with limited info, tight time, and no safety net. The problems vary, but the terrain is shared: shipping too early, hiring too safe, trusting your gut and hoping you’re right. Your hosts: Artur Guja, ex-CRO and ex-trader who navigated 2008 with gains. Dr. Marian Siwiak, scientist, data whisperer, author of Data Mesh in Action, and creator of artificial sentience. Together, they wrote Starting Data Analytics with ChatGPT. And they still enjoy what matters most: talking to founders figuring it out as they go. Subscribe if you want to learn what works (and what doesn’t) from people who’ve lived it.
Episodes

Monday Jun 02, 2025
E51: Heat, Waste, Wisdom, and Computing Power with Mark Bjornsgaard
Monday Jun 02, 2025
Monday Jun 02, 2025
In this Between Data and Risk episode, Dr. Marian Siwiak and Artur Guja engage with Mark Bjornsgaard of Deep Green to explore innovative solutions for utilizing waste heat from data centers. The conversation delves into the potential for community benefits, the evolving landscape of data center clients, and the intersection of environmental, social, and governance (ESG) factors with cost efficiency. Mark shares insights from his entrepreneurial journey, the importance of local solutions in energy transition, and reflections on capitalism and social responsibility.
Takeaways
- 90% of the heat from data centers can be captured for use.
- Data centers can provide free heat to local communities.
- The prawn industry is a significant contributor to carbon emissions.
- Local solutions are essential for sustainable energy practices.
- The journey of entrepreneurship often involves waiting for the right moment.
- Cost efficiency is crucial for the adoption of green technologies.
- Brexit has complicated the tech market in the UK.
- Community engagement is vital for successful energy projects.
- The importance of social responsibility in business practices.
- Innovative energy storage solutions can transform the market.
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