An important source for anthropogenic greenhouse gas emissions is the burning of fossil fuels. The industrial use of fossil fuels excellerated after the Industrial Revolution at the mid of the 19th century, especially in the developed countries. The only non-renewable energy source then was coal, which was consumed at very small rates at that time, about 20 Mtons in 1776 (King Hubbert, 1974)). The production of coal has increased ever since, to 3,736 Mtons in 1980, a 187-fold increase within two centuries (Etemad, 1991). The sharp increase after the Second World War was primarily the result of the rapid development of heavy industry in the former USSR and China and, despite the increase in the closing of mines in Europe after 1960. The production of crude oil began shortly after 1850 in Romania and two years later in the United States. It increased smoothly from 10,2 Mtons in 1890 to 2,977 Mtons in 1980, a 292-fold increase or roughly comparable with a doubling rate of the production every 10 years (Etemad, 1991). The production of natural gas show a similar pattern as that of crude oil. In 1890 the USA was globally the only producer of natural gas with a 6.6 Mm3, whereas in 1980 also the CIS and OECD Europe became important producers of gas. This lead to a total global production of 1,509 Mm3, a 228-fold increase in less than a century.