News tagged with atmospheric concentrations

Oxygen fuels the fires of time

Variations in the Earth's atmospheric oxygen levels are thought to be closely linked to the evolution of life, with strong feedbacks between uni- and multicellular life and oxygen. Over the past 400 million years the level ...

Aug 02, 2010 4.8 / 5 (14) 29 | with audio podcast

High CO2 spurs wetlands to absorb more carbon

(Phys.org) —Under elevated carbon dioxide levels, wetland plants can absorb up to 32 percent more carbon than they do at current levels, according to a 19-year study published in Global Change Biology from t ...

Jul 16, 2013 4.7 / 5 (12) 12 | with audio podcast