Yale Environment 360: Massive seaweed farms that suck carbon dioxide out of the atmosphere and counteract ocean acidification. The widespread adoption of carbon fiber technology that extracts CO2 from the air and turns it into cars and other industrial products. Concrete manufacturing that is carbon-negative rather than the energy-guzzling Portland cement used today. And giant chiller boxes installed in Antarctica that super-freeze the Damien Pleming Tim Flannery already frigid air there, producing CO2 snow that can...