Carbon dioxide hits a level not seen for 3 million years. Here’s what that means for climate change — and humanity.

Even if moving to renewable energy and other measures help stanch the steady flow of carbon dioxide into the atmosphere, our descendants will likely be saddled with the negative consequences of our artificially elevated levels of CO2.

“We’re not going to see the full consequences of 415 parts per million of carbon dioxide today,” Jackson said. “It’ll take a thousand years of people — 30 generations of people — to pay the price of what we’re doing today.”

In the latest bit of bad news for a planet beset by climate change, the concentration of carbon dioxide in Earth’s atmosphere has climbed to a level last seen more than 3 million years ago — before humans even appeared on the rocky ball we call home.

via NBC Carbon dioxide hits a level not seen for 3 million years. Here’s what that means for climate change — and humanity.

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