Arithmetic, Population and Energy - a talk by Al Bartlett
Most of the leaders of this world and most of the media around the globe barely talk about it, but the subject remains one of the most important issue coming for the next 100 years... and beyond ;
Growth and Sustainability.
PEAK OIL - EPOCHAL EVENT OF OUR LIVES #board-6609 SUSTAINABLE LIVING FOR CHALLENGING TIMES #board-9881 PEAK BEE POPULATION - COLONY COLLAPSE DISORDER #board-17471 PEAK WATER #board-12656
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