‘We Don’t Know a Planet Like This’: CO2 Levels Hit 415 PPM for First Time in 3 Million+ Years

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“How is this not breaking news on all channels all over the world?”


It’s a “climate emergency.” Environmental campaigners stand on top of a DLR train at Canary Wharf Underground Station during the third day of a coordinated protest by the Extinction Rebellion group on April 17, 2019 in London, England. More than 100 arrests have been made, with demonstrations blocking a number of locations across the capital. (Photo: Leon Neal/Getty Images)

Atmospheric levels of carbon registered 415 parts per million over the weekend at one of the world’s key measuring stations, a concentration level researchers say has not existed in more than 3 million years – before the dawn of human history.

Taken at the Mauno Loa Observatory in Hawaii by the Scripps Institution of Oceanography, the measure continues the upward trend of atmospheric carbon concentration that lies at the heart of the global warming and climate crisis:

Meteorologist Eric Holthaus, a journalist who covers the climate crisis for Grist, contextualized the latest readings in a tweet that was shared widely on Sunday:

This is the first time in human history our planet’s atmosphere has had more than 415ppm CO2. Not just in recorded history, not just since the invention of agriculture 10,000 years ago. Since before modern humans existed millions of years ago. We don’t know a planet like this.

One person responded to the Holthaus tweet by asking, “How is this not breaking news on all channels all over the world?” MORE

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Climate crisis: CO2 levels rise to highest point since evolution of humans
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