Earth, like a dorky sweatband, soaks it up

A Brit's recent study of ice samples finds that the Earth has a surprising ability to absorb the increases in carbon dioxide in the air.
Although the rate at which we belch CO2 into the atmosphere has increased almost 18-fold since 1850, ice samples taken from Antarctica suggest the planet has soaked up almost half the carbon added to the mix by the activity of man. (Probably no small amount of it created in the manufacture of monstrous things like the one strapped to this guy's noggin.)
It could be a rosy finding, if it holds up, because conventional wisdom was that the Earth's ability to absorb CO2 would decrease as it became saturated.