Polar ocean 'soaking up less CO2'
One of Earth's most important absorbers of carbon dioxide (CO2) is failing to soak up as much of the greenhouse gas as it was expected to, scientists say.
The decline of Antarctica's Southern Ocean carbon "sink" - or reservoir - means that atmospheric CO2 levels may be higher in future than predicted.
These carbon sinks are vital; they mop up excess CO2 from the atmosphere, slowing down global warming.
[The study, by an international team, is published in the journal Science.]
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