
New study finds metallic minerals act as geobatteries to split water
An international team of researchers, including a Northwestern University chemist, has discovered that metallic minerals on the deep-ocean floor produce oxygen — 13,000 feet below the surface.
The surprising discovery challenges long-held assumptions that only photosynthetic organisms, such as plants and algae, generate Earth’s oxygen. But it now appears oxygen also can be produced at the seafloor — where no light can penetrate — to support the oxygen-breathing (aerobic) sea life living in complete darkness.