Carbon dioxide levels measured on Mauna Loa in Hawaii set a new record of 424 parts per million in May, continuing the steady climb in greenhouse gas concentration in the atmosphere, the Scripps ...

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, ...

This volleyball-looking device is one of the glass flasks that Charles D. Keeling and others used to transport samples of atmosphere from Mauna Loa and beyond to a laboratory for precise analysis.

There's now more carbon dioxide (CO2) in the atmosphere than ever before in human history, scientists have revealed. For the first time on record, monthly average CO2 levels exceeded 430 parts per ...

The Trump administration quietly released key climate change data last week that has historically been accompanied by expert analysis from government scientists at the National Oceanic and Atmospheric ...