carbon sequestration

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(carbon capture and storage, CCS)

The storage of the greenhouse gas carbon dioxide in natural sites, thus removing it from the atmosphere and reducing global warming. Carbon may be sequestered in plants (especially trees), but other potentially useful reservoirs are depleted oil and gas wells, underground geological formations, and deep in the ocean. (Provided the gas is injected below the oceanic thermocline, it takes many hundreds of years to mix with the surface waters.) See also carbon management.

Subjects: Environmental Science.

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