A California startup says it can scrub carbon dioxide from the air using limestone as a carbon-sucking sponge.
San Francisco-based Heirloom Carbon has become a hot name in the nascent capture technology sector, even sealing a deal with Microsoft to help the Windows-maker meet its zero-carbon ambitions.
Governments are embracing similar innovations to meet their climate goals.
Capturing CO2 directly out of the atmosphere is the "time machine" that will take us back to cleaner air, according to Heirloom cofounder and CEO Shashank Samala.
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