What's the world's biggest carbon capture plant? And will it actually help us?
Izabela Lerner, Seedlings Writer
Which magical device sucks carbon dioxide directly from the air? Trees! Also: the world's biggest carbon-capture plant, just opened in Iceland.

The plant, called Orca after the Icelandic word for energy, proves it is possible to filter CO2 from the air and cool it into rock, which the UN says is necessary if the world wants to be carbon neutral by 2050.

The good: It works, and has the impact of 200,000 trees in 1,000 times less space. They're building more plants like it as we speak.

The challenge: It is very expensive. It's expected to drop in price dramatically, but only by 2050. Even then, we'd need 50,000 plants like Orca and it'd cost $5 trillion a year to remove current emissions.

The upshot: It's a great breakthrough, but no get-out-of-jail-free card: "We now know we can do it. Now we're just haggling over price."
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