Captura

The ocean holds many mysteries. But one thing we do know is that it soaks up almost a third of the carbon dioxide released into the atmosphere. Captura wants to harness this natural carbon-removal prowess to help cool the earth. Projects to pull CO 2 out of air , known as direct air capture (DAC), are starting to take off around the world. But they typically require large fans that send air over expensive sorbents. “The ocean is already doing this job at a massive scale,” Captura CEO Steve Oldham says. Captura strips CO 2 out of the ocean, allowing the waters to draw more CO 2 from the atmosphere. “We’re not adding materials or fundamentally changing the way the ocean works,” Oldham says. “We’re utilizing its tremendous size and power to help us.” Captura’s direct ocean capture (DOC) technology relies on electrodialysis—the transport of ions across membranes using an