Tuesday, September 28, 2010

Estimated times of the disappearances of Man's traces:

  • Immediately- Most endangered species start recovering
  • 24-48 hours- light polution ended
  • 3 months- Air pollution (nitrogen and sulfur oxides) lessens
  • within 10 years- Methane in atmosphere gone
  • Within 20 years- Rural Roads and vilages overgrown, GM crops disappear.
  • Within 50 years- Fish stocks recover, Nitrate and phosphates in fresh water gone.
  • 50-100 years- Urban streets and buildings overgrown.
  • 100 years- Wooden buildings decay.
  • 100-200 years- Bridges collapse
  • within 200 years- Metal and Glass buildings collapse, US grain belt returns to prairie.
  • Withinin 250 years- Dams collapse
  • Within 500 years- Corals regenerate.
  • 500-1000 years Organic Landfill waste mostly decayed.
  • 1000 years Most brick, stone and concrete buildings are gone, Carbon Dioxide in the atmosphere back to pre-industry levels
  • 50,000 years- Most glass and plastic degraded.
  • After 50,000 years- Mankind's tenure is mostly marked by a few archaeological remains...
.... but some man-made chemicals only disappear after 200,000 years and nuclear waste can remain for up to 2,000,000 years!


  1. Well its good to know that the earth can repair itself.

  2. If only it could happen...


  3. Great book series (the world without us) on this, and I think a TV series (life after man?) too.

  4. If people would just stop being so selfish, the Earth could very easily repair itself.
    Latter can't happen without the former, sadly.

  5. Now how can it come true :P

  6. Very thought-provoking post bro!
    supporting and following~