Green issues

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• 

  The Threshold of Change. 1986

  
  
  In a recorded 1986 lecture from Jonathon Porritt discusses politics, economics and spiritual dimension from an environmental standpoint.
  ideo on DemandBuy DVD
• 

  The Tragedy of the Commons

  
  
  Seminal film on ecology and finite resources.
    £25.00 ideo on DemandBuy DVD