To boost greenhouse productivity, Skytree is using space station CO2 scrubbers

Sucking carbon dioxide out of the air isn’t rocket science — the technology is decades old — but one startup thinks that maybe a little rocket science could help make direct air capture better.
Carbon dioxide scrubbers have been around since the 1800s, when commercial divers used them to extend their oxygen supply underwater. The technology got another boost when humans launched themselves into space. But it wasn’t until the specter of unchecked climate change that people began to consider its terrestrial applications.
A number of startups are racing to commercialize direct air capture of CO2,

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