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☆ Surprising element traced back to Renaissance alchemist’s basement laboratory
▼ + stars: | 2024-07-28 | by ( Ashley Strickland | ) edition.cnn.com time to read: +7 min

Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. Thousands of years ago, our ancestors produced the first maps of the stars and practiced alchemy, the precursor to chemistry. But ancient alchemists actually developed technology and discovered chemical elements that are still widely used today. Now, a new discovery links both astronomy and alchemy in one intriguing figure who lived during the Renaissance. Once the Starliner mission concludes, SpaceX will ferry a quartet of astronauts for NASA’s Crew-9 mission to the space station.

Persons: Sir Isaac Newton, Uraniborg, Tycho Brahe, Brahe, wasn’t, Butch Wilmore, Suni Williams, Mark Nappi, Craig Smith, Diva Amon, Andrew Sweetman, Sweetman, ”, David Flannery, Ashley Strickland, Katie Hunt Organizations: CNN, Chemists, Lund University Danish, NASA, Boeing, Engineers, SpaceX, NASA’s, Marine, Scottish Association for Marine Science, JPL, Caltech, Perseverance, CNN Space, Science Locations: Ireland, Brazil, Mars

☆ Scientists discover ‘dark oxygen’ being produced by seabed metals in ground-breaking study
▼ + stars: | 2024-07-23 | by ( Sam Meredith | In Samuelmeredith | ) www.cnbc.com time to read: +1 min

A team of international scientists has found that oxygen is being produced in complete darkness approximately 4,000 meters below the ocean's surface. An international team of scientists has discovered that oxygen is being produced by potato-shaped metallic nodules thousands of feet below the surface of the Pacific Ocean. A team of scientists led by Professor Andrew Sweetman at the U.K.'s Scottish Association for Marine Science found that oxygen is being produced in complete darkness approximately 4,000 meters (13,100 feet) below the ocean's surface. "For aerobic life to begin on the planet, there had to be oxygen and our understanding has been that Earth's oxygen supply began with photosynthetic organisms," Sweetman said. "But we now know that there is oxygen produced in the deep sea, where there is no light.

Persons: Andrew Sweetman, Sweetman Organizations: Nature Geoscience, Scottish Association for Marine Science

☆ Scientists discover ‘dark’ oxygen being produced more than 13,000 feet below the ocean surface
▼ + stars: | 2024-07-22 | by ( Katie Hunt | ) edition.cnn.com time to read: +13 min

It’s also possible, these scientists warn, that deep-sea mining could disrupt the way carbon is stored in the ocean, contributing to the climate crisis. A documentary about deep-sea mining that Sweetman watched in a hotel bar in São Paulo, Brazil, unleashed a breakthrough. However, several countries, including the United Kingdom and France, have expressed caution, supporting a moratorium or ban on deep-sea mining to safeguard marine ecosystems and conserve biodiversity. Earlier this month, Hawaii banned deep-sea mining in its state waters. Many unanswered questions remain about how dark oxygen is produced and what role it plays in the deep-sea ecosystem.

Persons: Andrew Sweetman, they’re, ”, Sweetman, ‘, SAMS, I’ve, “, Franz Geiger, ’ ”, Geiger, Charles E, Emma H, Morrison, Daniel Jones, Beth Orcutt, Orcutt, Craig Smith, Smith, Camille Bridgewater, Hawaii’s Smith, ” Geiger, Diva Amon, ” Sweetman Organizations: CNN, Clarion, Scottish Association for Marine Science, Nature, NHMDeepSea, SMARTEX, International, Authority, UN, AA, Northwestern University, Northwestern’s Weinberg College of Arts and Sciences, National Oceanography, Bigelow Laboratory, Ocean Sciences, University of Hawaii, Geological Survey, University Locations: São Paulo, Brazil, Evanston , Illinois, Southampton, England, Maine, Mānoa, Jamaica, United Kingdom, France, Hawaii, Clarion

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