Rising carbon dioxide levels are heating the planet but may also have an alarming, invisible impact on the human body, ...

An observatory high on Hawaii's Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever seasonal peak concentration of the greenhouse gas. For the first time, ...

Add Yahoo as a preferred source to see more of our stories on Google. Carbon dioxide emissions continue to increase around the world. "How much carbon dioxide is the problem," he asks. "How much ...

Earth’s atmosphere now has more carbon dioxide in it than it has in millions — and possibly tens of millions — of years, according to data released Thursday by the National Oceanic and Atmospheric ...

Frozen air from Antarctica is giving scientists a longer look at a climate mystery that has lingered for decades: why Earth ...

"Carbon dioxide remains in the atmosphere for centuries and in the ocean for even longer. The last time the Earth experienced a comparable concentration of CO2 was 3-5 million years ago, when the ...

The levels of the crucial heat-trapping gases in the atmosphere reached historic highs last year, growing at near-record fast paces, according to the U.S. National Oceanic and Atmospheric ...