First in 4 Million Years: CO2 Rates in Antarctica Hit 400 PPM
On May 23, we officially started living in a brand new world when a historic climate change milestone took place. For the first time in 4 million years, the planet’s carbon dioxide concentrations at the South Pole hit 400 parts per million (ppm).
Since the beginning of the Industrial Revolution, Earth’s carbon dioxide concentration has been on a steady rise. But since the majority of mankind’s carbon emissions are happening far away from the South Pole, this spot on our planet takes longer to catch up.
And on May 23, it finally surpassed a historic climate change milestone based on the recent report from the South Pole Observatory.
“The far southern hemisphere was the last place on earth where CO2 had not yet reached this mark,” said lead researcher Pieter Tans from the
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