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, ...

Carbon dioxide (CO2) blood tests evaluate the presence of the gas in your blood. If your CO2 levels rise too high or fall too low, the test results may be an indication that you have a health ...

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, ...

The Charleston County School District says Mamie P. Whitesides Elementary School experienced higher than normal carbon dioxide (CO2) levels Tuesday, after engineers atthe school noticed two outdoor ...

Carbon dioxide is accumulating in the atmosphere faster than ever before, putting hopes of limiting warming in jeopardy. For more than 60 years, scientists at the Mauna Loa Observatory in Hawaii have ...

Carbon dioxide levels measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked at 424 parts per million (ppm) in May, continuing a steady climb further into territory not seen for millions ...

“There’s no correlation between carbon dioxide & climate & never was,” reads the text in the tweet. “CO2 is in trouble & in steady decline for millions of years. Temperatures are also falling, ‘not’ ...

GENEVA (AP) — Heat-trapping carbon dioxide levels in the atmosphere jumped by the highest amount on record last year, soaring to a level not seen in human civilization and “turbo-charging” the Earth’s ...

Far above your head, in the atmosphere between Earth and outer space, an invisible process is occurring. The increasing concentration of carbon dioxide is already manifesting itself in impacts beyond ...