4 root causes of un-sustainability?

What are the 4 reasons why we are unsustainable as a society today? In this video I explain the four root causes of unsustainability based on a scientific consensus. This builds on the work of doctor Karl-Henrik Robèrt and The Natural Step, you can read more about his research here: http://en.wikipedia.org/wiki/Karl-Henrik_Rob%C3%A8rt

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