"It's like a vacuum cleaner, basically, that sucks carbon out of the air," Economist climate innovation editorjay Vaitheeswaran tells Marketplace.
"That's actually as good a description as anyone's come up for it."
Vaitheeswaran is referring to direct air capture, a process in which chemicals are used to suck carbon dioxide out of the air.
Last week, Occidental Petroleum bought Carbon Engineering, a firm backed by Bill Gates, for more than $1 billion, a move that's drawing criticism from environmentalists.
"It's only right to be skeptical when an oil company says, 'Hey, we're gonna do this nice thing, and so we can keep pumping oil,'" Vaitheeswaran says.
But Vaitheeswaran says that's exactly what's happening.
"The US government has just given a massive grant [of] $1.2 billion for, specifically, this topic," he says.
"Real money, going into pilot phase projects that are ready to scale up to commercial level."
Carbon Engineering's technology is currently being tested in Texas, and Vaitheeswaran says it could be used to make fizzy drinks or other industrial uses.
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Ganesh Natarajan is the Founder and Chairman of 5FWorld, a new platform for funding and developing start-ups, social enterprises and the skills eco-system in India. In the past two decades, he has built two of India’s high-growth software services companies – Aptech and Zensar – almost from scratch to global success.