Carbon Dioxide Levels Set to Pass 400ppm — Permanently

Carbon emissions and extreme weather events poised to push CO2 levels past symbolic threshold for good.
By Nadia Prupis / Common Dreams
Record carbon dioxide levels are set to surpass the symbolic threshold of 400 parts per million (PPM) this year and will likely never fall below that line again in our lifetimes, according to a new study published Monday in the journal Nature Climate Change.
Scientists at the UK Met Office used emissions data, sea surface temperature figures, and a climate model from the Mauna Loa Observatory in Hawaii to track the trajectory of CO2 levels and found that carbon dioxide “will for the first time remain above 400 ppm all year and hence for our lifetimes.”
Emissions have increased over the past 12 months due to the continued burning of fossil fuels, but the impact has also been exacerbated by an unbridled El Niño event.

By John Lawrence
UC San Diego’s Academic Senate announced the passage of 









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