Aarne Naess, in a seminal paper on environmental philosophy, distinguished between two streams of environmental philosophy and activism—shallow and deep. The deep, long-range ecology movement has developed over the past four decades on a variety of fronts. However, in the context of global conferences on development, population, and environment held during the 1990s, even shallow environmentalism seems to have less priority than demands for worldwide economic growth based on trade liberalization and a free market global economy.