Li Cohen is a senior social media producer at CBS News. She previously wrote for amNewYork and The Seminole Tribune. She mainly covers climate, environmental and weather news. "Over the past year, ...

Last year, atmospheric carbon dioxide briefly crossed 400 parts per million for the first time in human history. However, it didn’t cross that threshold until mid-May. This year’s first 400 ppm ...

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 ...

Atmospheric concentrations of carbon dioxide made history last month by climbing to their highest seasonal peak available in historical records, a team of researchers reported. For the first time ever ...

A new study suggests rising carbon-dioxide levels may be slowly changing human blood chemistry and could impact long term ...

It's like the Dow Jones. But instead of measuring the stock market, the Keeling Curve measures the amount of carbon dioxide in the atmosphere. Scientists at Scripps Institution of Oceanography at 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 ...

Study Suggests Human Blood Could Be Pushed Past Its Healthy Limits Within 50 Years In A Nutshell A new analysis of U.S. blood test data from 1999 to 2020 found that average bicarbonate levels in the ...