There's a Joseph Conrad kind of symbolism in the location of the United Nations-sponsored World Summit on Sustainable Development. A collection of central planners has convened in Johannesburg, South Africa, to further centralize control over private property and streamline the distribution of wealth from freer, more prosperous nations to despotic, underdeveloped ones. The intellectual and ethical impetus for this renewed assault on freedom and prosperity is the repugnant Marxist theory of environmentalism. Conservation is the central planners' Trojan Horse for a globally coordinated assault on individual rights. These "watermelons" – green on the outside, red on the inside – adroitly...