Another year, another record,” quipped Ralph Keeling, head of the Scripps CO2 Program, as atmospheric carbon dioxide hit 430 ...

For the first time on record, monthly average CO2 levels exceeded 430 parts per million (ppm), according to experts at ...

Earth surpasses a CO2 milestone of 430 ppm, marking the highest carbon levels in millions of years. Scientists warn of faster ...

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 ...