Christopher O ClugstonSince 2005, Chris Clugston has conducted extensive research into human "sustainability", with a focus on NNR (nonrenewable natural resource) scarcity. His goal is to articulate and quantify the causes and consequences associated with industrial humanty's predicament. Clugston's previous work includes "Scarcity - Humanity's Final Chapter?", the definitive resource regarding NNR scarcity. Read More Read Less