Andrew Paul is Popular Science's staff writer covering tech news. Previously, he was a regular contributor to The A.V. Club and Input, and has had recent work featured by Rolling Stone, Fangoria, GQ, Slate, NBC, as well as McSweeney's Internet Tendency. He lives outside Indianapolis.
ArticleBody:It’s one of the earliest things you learn in elementary school science class—Earth’s life-sustaining oxygen is produced by plants and algae during photosynthesis using a combination of carbon dioxide and sunlight. But the recent discovery of what researchers call “dark oxygen” may upend conventional notions of how the critical element can be created–and what that might mean for the origins of life.
” In 2023, Sweetman contacted Northwestern University electrochemistry expert Franz Geiger about the strange evidence and sent him multiple pounds of polymetallic nodules. Electrolysis, the process of splitting a target into its separate elements, needs only 1.5 volts to initiate in seawater—and after attaching sensors to a single nodule, Sweetman and Geiger detected voltages as high as 0.95 volts.
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