This week, the world is being treated to the biggest left-wing “socio-political monster truck rally” the United Nations has ever staged: the Rio+20 — U.N. Conference on Sustainable Development, which has attracted about 50,000 people. This rowdy bash is spiced by the vague, elastic and numerous definitions of “sustainable development,” resulting in endless, pointless arguments.

Twenty years ago, the original 1992 Earth Summit in Rio de Janeiro generated Agenda 21, a hideous document enshrining the term “sustainable development,” plus the Rio Declaration on Environment and Development, plus the framework for the later Kyoto Protocol, plus 300 tons of trash in the streets. For this year’s event, the city is hosting heads of state, government leaders, environmental organization executives, business leaders, social activists, artists and professional struggle-junkies, with the U.S. delegation led by Secretary of State Hillary Clinton.