Scientists just discovered oxygen being produced without sunlight — without photosynthesis — at the bottom of the ocean. This “dark oxygen” could fundamentally change the story we tell of life on Earth and in the rest of the universe. For show transcripts, go to vox.com/unxtranscripts For more, go to vox.com/unexplainable And please email us! [email protected] We read every email. Support Unexplainable by becoming a Vox Member today: vox.com/members Learn more about your ad choices. Visit podcastchoices.com/adchoices