This is the best summary I could come up with:

In an open-air warehouse in California’s Central Valley, 40-foot-tall racks hold hundreds of trays filled with a white powder that turns crusty as it absorbs carbon dioxide from the sky.

The start-up that built the facility, Heirloom Carbon Technologies, calls it the first commercial plant in the United States to use direct air capture, which involves vacuuming greenhouse gases from the atmosphere.

Critics point out that many artificial methods of removing carbon dioxide from the air are wildly expensive, in the range of $600 per ton or higher, and some fear they could distract from efforts to reduce emissions.

In an attempt to build confidence in the market, the Energy Department in September announced it would buy $35 million worth of carbon removal credits from up to 10 providers, in order to establish new guidelines around what counts as a “high quality” project.

“There’s a big difference between exploring an infant technology to see if it can be developed, versus telling the public, ‘If we do this, we can continue burning fossil fuels forever,’” former Vice President Al Gore said at a recent New York Times event.

The debate over how big a role carbon removal should play in tackling climate change is still in early stages, said Emily Grubert, associate professor of sustainable energy policy at the University of Notre Dame.

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