Lần đầu tiên ở Mỹ, một nhà máy thương mại bắt đầu hút carbon từ không khí

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In an open-air warehouse (nhà kho) in California’s Central Valley, 40-foot-tall racks hold hundreds of trays filled with a white powder (bột màu trắng) that turns crusty (giòn) as it absorbs (hấp thụ) carbon dioxide from the sky.

The start-up that built the facility (cơ sở), 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. Another plant is operating in Iceland, and some scientists say the technique could be crucial (quan trọng) for fighting climate change (biến đổi khí hậu).

Heirloom will take the carbon dioxide it pulls from the air and have the gas sealed permanently in concrete (bê tông), where it can’t heat the planet. To earn revenue, the company is selling carbon removal credits (tín dụng loại bỏ carbon) to companies paying a premium to offset their own emissions (lượng khí thải). Microsoft has already signed a deal with Heirloom to remove 315,000 tons of carbon dioxide from the atmosphere.

... The idea of using technology to suck carbon dioxide from the sky has gone from science fiction (khoa học viễn tưởng) to big business, with hundreds of start-ups emerging. Critics say that many artificial methods of removing carbon dioxide from the air are wildly expensive, and some fear they could distract from efforts to reduce emissions.

source: nytimes,