The Conversation

February carbon dioxide levels average 400ppm for first time

08-03-2015 Author: The Conversation

For the first time, the February monthly average carbon dioxide levels at the Mauna Loa Observatory have passed 400ppm.NOAA/Wikimedia Commons

The US government’s greenhouse gas monitoring site at Mauna Loa in Hawaii has confirmed that its average recorded carbon dioxide levels for February topped 400 parts per million (ppm) – the first...

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