Unsustainable development now compromises the ability of future generations to meet their needs. Global warming, destruction of the ozone shield, acidification of land and water, desertification and soil loss, deforestation and forest decline, diminishing productivity of land and waters, and extinction of species and populations, demonstrate that human demand is exceeding environmental support capacities. The annual increase in industrial production in 1989 is as large as that of Europe's total production in the 1930s. The populations of 74 countries are doubling every 30 years or less. Population growth increases poverty and deprived people are forced to undermine the productivity of the land on which they live. It is extremely difficult for people, or other species, to adjust to change at this rate.