Jeffrey Sachs speaks at the Montreal Millenium Promise Conference on November 9 2006, in Montreal, Canada.
Ideas change the world. The power of a new idea is the engine that transforms the way we live and think. (Our country was founded on one.) It was almost 50 years ago that the philosopher Thomas Kuhn coined the term paradigm shift--the moment when our worldview fundamentally changes because of a new idea, as when people understood that the sun does not revolve around the earth or that climate change is altering the way we would all have to live.
Our new idea--and for it, we can thank senior writer Lev Grossman, who edited the cover package--is the magazine you...
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