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26 maart 2010

Hebben we de aarde voorbij een omslagpunt geduwd?

Door Brad Johnson, Climate Progress,25 maart 2010

Humanity developed civilization within a small zone of environmental conditions, but in the last century we have begun reshaping our planet, accelerating the process in recent years:

We’ve cleared, consumed and polluted our way across the globe. The planet is shrinking. Have we pushed Earth past the tipping point?

Last September, a team of 28 scientists identified “10 separate biophysical systems crucial to humanity’s flourishing” and then determined “safe operating boundaries” for those systems within which humanity must remain if we wish to maintain the conditions in which it developed civilization. Unfortunately, anthropogenic interference with the climate system, the nitrogen cycle, and biodiversity is already past safe thresholds, with ocean acidification, ozone depletion, and other resource consumption at the door.

Zie ook:

Video lays out the empirical evidence for human-caused global warming

In recommending the video, Skeptical Science notes:
A common skeptic argument is that there is no empirical evidence for man-made global warming. People who make this claim can’t have looked very hard. As most don’t have the time to scour through the peer-reviewed scientific literature, the multiple lines of independent evidence for global warming are given here.
Also be sure to check out the (more info) link in the right margin where links to all the peer-reviewed papers are provided. This is a powerfully visual way of communicating the science of climate change — I strongly recommend you all view the video, pass it onto your friends (and if you’re feeling really energetic, follow the paper links to learn more about the science). 

Later toegevoegd:

Zie ook m'n blognotitie:
Somberste voorspellingen opwarming aarde kloppen waarschijnlijk

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