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In a new and disconcerting milestone for human-induced climate change, Earth's concentration of CO2 has reached levels never before seen in human history.
According to measurements from the Mauna Loa Observatory in Hawaii, atmospheric CO2 has hit 415 parts per million, eclipsing record highs recorded in Arctic Ice samples that date back 800,000 years.
Precedent - Twitter - Eric - Holthaus - Meteorologist
The precedent was noted on Twitter via Eric Holthaus, a meteorologist and journalist for the online magazine, Grist.
'This is the first time in human history our planet's atmosphere has had more than 415 ppm CO2,' said Holthaus in a tweet.
'Not - History - Invention - Agriculture - Years
'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.'
As noted in a report from CNN, the levels exceed a peak from about 3 million years ago during the Pilocene Epoch, when atmospheric CO2 reached between 300-400 million ppm with temperatures of about 2-3 degrees Celsius warmer than today's.
Carbon - Dioxide - Contributor - Change - Globe
Carbon dioxide is the biggest contributor to climate change around the globe and stays in the atmosphere for many years after its emitted, making it possible for the effects to compound over long periods of time.
Even if the world were to stop emitting CO2 altogether, gases could continue to warm the planet for centuries say some researchers.
Record - Levels - CO2 - Earth
Record levels of CO2 in the Earth's...
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