LESTER BROWN: PLAN B. MOBILIZING TO SAVE CIVILIZATION.PBS DOCUMENTARY. WE HAVE REACHED MOST SUSTAINABLE TIPPING POINTS: TO SURVIVE WE MUST CHANGE OUR THINKING AND LIFESTYLES

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LESTER BROWN: PLAN B. MOBILIZING TO SAVE CIVILIZATION.PBS DOCUMENTARY
WE HAVE REACHED MOST SUSTAINABLE TIPPING POINTS: TO SURVIVE WE MUST CHANGE OUR THINKING AND LIFESTYLES