Uncharted territory: Carbon dioxide expected to peak at levels last seen during Pliocene Epoch

Tierr@_de_Nadie: We have already reached 417 ppm of carbon dioxide in our atmosphere, when some years ago 400 ppm was considered a dangerous point. But don't worry about climate change, just think about the coronavirus affaire.

For the first time in human his story, the concentration of carbon dioxide in Earth’s air reached 400 parts per million (ppm). The last time the planet experienced such high levels of the greenhouse gas was more than 3 million years ago, when conditions on Earth were unrecognizable from today and giant camels roamed a mostly ice-free High Arctic.

Source (nbcnews.com): Uncharted territory: Carbon dioxide expected to peak at levels last seen during Pliocene Epoch