These Lego-like bricks can store carbon for centuries

A Bill Gates-backed startup claims it could be one step closer to helping clean up air pollution. The solution? A new type of carbon-removing brick could help us store that pollution for years to come—perhaps even thousands of years.

The company behind the revolutionary new procedure is Graphyte. The company uses a “deceptively simple” method to create the bricks, which requires using blocks of wood chips and rice hulls. Some are already calling it a “game-changer” for fighting air pollution...