Level of carbon dioxide on Earth the highest it’s been since the dawn of mankind — National Post

There is more carbon dioxide on the planet than ever since the dawn of humanity, according to a Hawaii observatory.

Data from the Mauna Loa Observatory in Hawaii has recorded atmospheric carbon dioxide levels at 415.26 parts per million (ppm), marking a historic precedent in the last 800,000 years, since before the evolution of homo sapiens.

“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,” tweeted Eric Holthaus, a meteorologist.

“We don’t know a planet like this.”

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via Level of carbon dioxide on Earth the highest it’s been since the dawn of mankind — National Post