On the occasion of the 75th birthday of Ernst Ulrich von Weizsacker this unique anthology presents thought-provoking texts from 1970 to 2013, spanning several disciplines and combining science and pra
When first published in 1997, Factor Four: Doubling Wealth, Halving Resource Use by renowned economic and engineering experts Ernst von Weizs?cker, Amory Lovins and L. Hunter Lovins, transformed how e