Limited Time: Grab your FREE Box of Dark Chocolate Almond Bars Get Yours>>Close
Results 1 to 2 of 2

Thread: Oxygen as a percentage of earth's atmosphere

  1. #1
    Join Date
    May 2010
    Pacific Northwest USA

    Oxygen as a percentage of earth's atmosphere

    Shop Now
    I was remembering something about oxygen being lower now than in the ancient past, and Mark posted about deep breathing (feels good!) and I got spurred to surf around for data on atmospheric oxygen.

    Here's the graph, from the British Royal Society, as reposted on Wikipedia.

    The red and green lines are the high and low estimates of credible authorities. The fifth time period is a billion years and the portion of that worth considering is maybe the last tenth of it. Fodder for speculation, but not much more!

  2. #2
    Join Date
    Oct 2010
    western new york
    Shop Now
    There certainly is cause for scientific concern as we decimate our plant population. Not just forests, but water pollution is doing extensive damage to algae in our oceans. They photosynthesize like other plants, create wonderful oxygen, feed fish, etc. And our pollution and bottom-scraping fishing fleets are destroying them.

    Very concerning.

    But then there's these knuckleheads:

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts