In the 1800s, before the industrial revolution, the entire population in the world is said to be around 6 billion. Since the revolution, the population started to increase dramatically. At present, more than 60 billion of people are living in the world. This means, the population increased more than 50 billion over the mere 300 years, while it only increased to 6 billion since the appearance of human beings on the earth. Evidently, the industrial revolution has caused a rapid increase in the population. It is expected that the world population would exceed 90 billion by 2050, with the increase mainly in developing countries.
As a result of the increase in population, the world would encounter several problems. Two of which would be the shortage of food and massive consumption of energy. It is expected that developing countries would need more energy to develop their economy. The massive consumption of energy would be accompanied by increased pollution of the environment. This would not only affect human’s health, but also the Earth’s ecology. For example, burning of fossil fuels generates carbon dioxide, thus causing global warming. The usage of energy is necessary in the development of a countries’ economy, but the consequence of such massive consumption of energy would be pollution, which would in turn affect the increasing population.
China, which is currently developing rapidly, is facing serious environmental problems at present. One of the most serious problem would be air pollution. In the 1980s, acid rain was seen only in part of south eastern China, however, nearly 30% of the country is suffering from acid rain nowadays. The economical losses which resulted from acid rain and dust in 1995 reached 2% of the entire GDP. (USD 13 billion) Besides, in recent years, 7.4 million people die in China annually caused by air pollution. The major source of air pollutants is considered to be massive consumption of inferior coal. China depends 80% of their power generation on coal. Superior coals are found mainly in the north- west region of China hence additional transportation cost will be incurred to bring them to other regions. Although there are several high technological powerhouses in China, most of the old powerhouses can not afford the installation cost. The prospect for spreading is not so good due to the high cost of construction.
The Chinese government has set the target to expand their economics of scale 4 times larger than that of 2000 by 2020. As for the demand of energy in 2020, it is expect to increase by 3 times of that in 2004, which will be equivalent to the total amount of energy that America and Japan consumed in 2000. Along with the consumption of energy, the generation of carbon dioxide and sulfur dioxide is said to be doubled. As for population, it is expected to exceed 14 billion by 2020. Due to the forecasted boom in the 2020, Chinese economy and population, the demand of energy, and thus the generation of toxic substances will increase dramatically.
Most of developing countries are facing the similar problem as China. Development of economy brings increase of population and consumption of energy, and these result in serious environmental problems such as pollution and global warming. Currently, the major source of energy is fossil fuels in which oil occupies a huge proportion. It is expected that the demand of fossil fuels would increase continuously worldwide. Also, it is said that world fossil fuel resources would be used up by the 22nd century. To establish efficient energy system and to develop new energy sources to replace fossil fuels are the future tasks of human.