Three Startups Reinventing Critical Infrastructure
Aug 5, 2026 · 1h 15m
Summary
This episode features Will O'Brien of Ulysses, who discusses building autonomous underwater robots for conservation, infrastructure, and defense, while also exploring the resurgence of seasteading. Turner from Mariana Minerals then explains how AI and software streamline critical mineral processing to counter China’s dominance. The discussion highlights technological solutions for ocean stewardship and efficient resource extraction.
Topics discussed
Introduction: A16Z portfolio companies Ulysses, Mariana, and Radiant
Ulysses: Building autonomous ocean robots for conservation and commercial use
Ulysses: US Navy interest and comparison to Subnautica
The Ocean Frontier: Why ocean exploration lags behind space and history of undersea tech
Geopolitics: China's autonomous underwater vehicle capabilities and threats
Seasteading: Libertarian utopias, logistics, and energy solutions for ocean habitats
Protecting Infrastructure: Sensors and robotics for undersea cables
Hamilton Club: A professional networking alternative to startup culture
Ulysses Vision: Healthy, safe, and prosperous oceans with global operations
Mariana Minerals: The complex journey from exploration to refined critical minerals
Mining Tech Challenges: Risk aversion, slow adoption, and the junior mining ecosystem
Mariana's Approach: Software-first operations, Plant OS, and reducing latency
Scaling Innovation: Accelerating commercial deployment of new mining technologies
Critical Minerals: Zinc, copper, nickel, rare earths, and exploration needs
Policy & Permitting: Streamlining reviews, government support, and international strategy
Radiant Origin: Doug's SpaceX background and the pivot to nuclear micro-reactors
Nuclear Industry Status: Manufacturing reactors, waste challenges, and market fit
Conclusion: Nuclear waste solutions and final thoughts on the episode
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