‘We Have to Act’: Atmospheric CO2 Passes 420 PPM for First Time Ever | Common Dreams News

The concentration of atmospheric carbon dioxide surged past 420 parts per million for the first time in recorded history this past weekend, according to a measurement taken at the Mauna Loa Observatory on the Big Island of Hawaii.

When the National Oceanic and Atmospheric Administration (NOAA) research station “began collecting CO2 measurements in the late 1950s, atmospheric CO2 concentration sat at around 315 PPM,” the Washington Post reported. “On Saturday, the daily average was pegged at 421.21 PPM—the first time in human history that number has been so high.”

While the growing concentration of atmospheric CO2—which increases the global average temperature and the number and severity of extreme weather events—is a long-term trend that corresponds with the rise of fossil fuel-powered capitalism, it has accelerated particularly rapidly since the 1970s.

‘We Have to Act’: Atmospheric CO2 Passes 420 PPM for First Time Ever | Common Dreams News