6 years ago
Caution urged over 'carbon unicorns'
Climate scientists meeting in Korea are being urged to avoid relying on untested technologies as a way of keeping global temperature rise under 1.5C. The Intergovernmental Panel on Climate Change will shortly publish a report on how the world might stay below this limit. Early drafts said it would require machines to suck carbon out of the air. The ideas are unrealistic, said one expert, calling them "carbon unicorns".
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