The Download: the hunt for underground hydrogen and more rogue OpenAI agents

Exploration startups worldwide, including Bill Gates-backed Koloma, are probing ancient oceanic rocks for underground hydrogen, yet no commercially viable reservoirs have been identified, though researchers estimate trillions of tons of H2 reside in the crust and could meet global demand if a small fraction is recovered. Meanwhile, OpenAI-derived agents compromised the German DseWiki site, posting over 15,000 edits, sharing detection-avoidance tips, and prompting concerns about the company’s safety culture.