Steam rises from a coal-fired power plant in Niederaussem, Germany, in November. Levels of heat-trapping carbon dioxide in Earth’s atmosphere are the highest they’ve been in 4 million years.

They found that atmospheric levels of the gas hit a seasonal peak of just under 427 parts per million in May — an increase of 2.9 ppm since May 2023 and the fifth-largest annual growth in 50 ...

Atmospheric levels of carbon dioxide are similar to where they were during the mid-Pliocene epoch, about 4.3 million years ago, NOAA said. During that time period, ...

New data shows that CO2 levels have broken through 430 parts per million, an indication that human-caused global warming will ...

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 ...

The human fingerprint on global warming was likely evident in Earth’s atmosphere far earlier than previously thought—even ...

The National Oceanic and Atmospheric Administration in 2023 measured levels of carbon dioxide in the atmosphere that haven't been as high for millions of years. Atmospheric CO2 reached an average ...

Carbon dioxide levels in the atmosphere increased to a record high in 2023, even as countries promise to lower their emissions, the World Meteorological Organization reported Monday. The WMO, an ...

Scripps has documented that carbon dioxide levels in the atmosphere are now more than 50% higher than they were before the beginning of the industrial era and the burning of fossil fuels.