Carbon dioxide levels in the atmosphere just hit a ‘depressing’ record high

Carbon dioxide levels in the atmosphere just hit a ‘depressing’ record high

These data come from the National Oceanic and Atmospheric Administration’s Mauna Loa Observatory, which may soon be shut down because of proposed government budget cuts

CO2 Levels In the Atmosphere Hit 'Depressing' New Record

Atmospheric carbon dioxide hit a new record in April, averaging about 431 parts per million at NOAA's Mauna Loa Observatory. That's up from under 320 ppm when the site began measurements in 1958. Scientific American reports: Greenhouse gases, such as carbon dioxide, are measured as a proportion of ...