On 14 November, I toured a transport container bristling with tubes and wires, perched beside New York Metropolis’s East river. It’s the check website of a start-up referred to as Vycarb, which lately started including crushed rocks and different chemical substances to the water to take away carbon dioxide from the environment.
On one facet of the container, an hourglass-like gadget blended a fantastic stream of calcium carbonate mineral powder with water pumped from under. This alkaline, grey-green slurry was then launched into an…