Can you spare just four minutes to watch this (silent) video, please?
Good words thieved from the YouTube comment thread (reinventing the wheel is futile):
David Furphy: “Watch this excellent 3 minute animation and you’ll immediately get how much Industrial Age humans have altered carbon dioxide levels in the atmosphere and how different the current level (400 ppm) is from the last eight hundred thousand years (180-280 ppm).
It also shows how the northern hemisphere, with so much more land mass and industrial activity than the southern hemisphere, appears to “breathe” carbon dioxide in and out on an annual cycle.”
Max Yekhlakov: “keep calm and carry on
we’re just returning to pre-Carboniferous levels of atmospheric carbon oxides, it is all part of the plan ;)”
Jari Juslin: “Yup. If you are an insect, lizard or algae, you have nothing to worry about!”