For millions of years, the Earth has oscillated between ice ages and warmer episodes. The movements of the ground beneath our ...

The movement of carbon between the atmosphere, oceans and continents -- or carbon cycle -- regulates Earth's climate, with the ocean playing a major role in carbon sequestration. A new study finds ...

Mars has not always been a seemingly lifeless red desert. We have evidence that billions of years ago it had a warm, habitable climate with liquid water in lakes and flowing rivers, which is somewhat ...

Lakes have long been viewed as sources of carbon dioxide emissions, but new research suggests they may actually act as carbon sinks. A study led by Uppsala University reveals that lake shorelines ...

Salt Creek in Death Valley, California. A new analysis reveals that rivers in arid landscapes are helping to soak up more carbon dioxide than previously thought. “Rivers are one of the most uncertain ...