Video: History of atmospheric carbon dioxide levels

Thanks to SteveoR for showing this to me!

The video shows a graph of the rise of atmospheric CO2 levels over the second half of the 20th century, into the 21st. Then it starts to “zoom out”, showing falling levels, back into the last ice age, rising before it, falling again for another ice age, and so on back to eight hundred thousand years BCE. As longer periods of time become visible on the graph, the timeline compresses, showing the last 50 years or so for the very short time that they represent. Well before the end of the video, it is clear that CO2 levels are far, far higher now than they have been at any point in the last 800,000 years, and beyond.


  1. StevoR says

    No worries, thankyou Abe Drayton.

    There’s also a good website here :

    Co2 Earth – formerly Co2 Now – which tracks monthly carbon dioxide levels updated usually a week or so into the new month which is worth following. They’ve got a good facebook page too.

  2. StevoR says

    Not so oddly really.

    But call me a hopeless optimist or not. I’ll keep hoping and trying to make things better coz what else can you do?

    We may never get to Utopia, but we sure can get closer to it than we are if we try to do so instead if just giving up in despair. World is worth fighting for .. People are.

    Perspective and (I think) truth :

    WARNING : Confronting images.

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