Add Yahoo as a preferred source to see more of our stories on Google. An observatory high on Hawaii's Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever ...

Hawaii’s Mauna Loa Observatory just captured an ominous sign about the pace of global warming. Atmospheric levels of planet-warming carbon dioxide aren’t just on their way to yet another record high ...

Carbon dioxide levels in the atmosphere reached a record high in April, averaging 431 parts per million (ppm), according to ...

The monthly average concentration of carbon dioxide in the atmosphere measured at Mauna Loa Observatory in March showed a record 12-month increase, the Scripps Institution of Oceanography announced ...

His father, Charles David Keeling, used Mauna Loa measurements to establish the famed Keeling Curve — a graph showing the accumulation of carbon dioxide in Earth’s atmosphere from 1958 up to the ...

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, ...