Sentences with phrase «ancient carbon back»

Not exact matches

The burning of fossil fuels essentially reintroduces ancient carbon that is stored in the depths of the earth back into the carbon cycle.

Researchers have a record of atmospheric carbon dioxide stretching back millions of years thanks to ice cores from Antarctica, which contain trapped gas bubbles, snapshots of ancient air.

Locked in bubbles of ancient air trapped in glaciers is a precise record of carbon dioxide stretching back 160,000 years.