Thanks to 20th-century technology, we live longer, travel farther and produce more goods. We also multiply. There are now more than 7 billion of us, more than four times the number 100 years ago. We run a billion motor vehicles on our roads and consume more and more of earth resources. In other century, there could be 15 billion people, all in need of jobs, homes, food, healthcare and transport. Unless growth slows, the world could be overwhelmed.
Population explosion
The united nation hopes people will learn to limit there children to two per couple.
Population growth next century will depend on when this target is reached. The graph shows three possibilities. The highest figure is the likeliest, and could well be exceeded.
Chaos in the streets
The city of the future is crowded, nightmare vision. Dirty, traffic choked the streets and pavements are squeezed between high rising buildings, in which solitary workers sit all day at computers in sound proof sealed offices. Some cities are, of course, just like this now, but it is going to get much worse. Britain, for example, already has the world's most crowded road networks, with 100 vehicles for every kilometre. With car use growing at its present rate, there will be 50 percent more traffic by 2030. This dependence on cars will cause yet more problems of congestion, accidents and pollution.
Throwaway society
European households each throw out a ton of rubbish every year. In the U.S.A, it is even more. Disposal by burying or burning delayed the environment - and the problem gets worse as people worldwide generate more and more waste.
Uncontrolled spread
Population in the industrialized nations of Europe and North America are growing slowly, but in the developing world, high birth rates double some countries numbers every 20-30 years. Millions flock to cities, hoping to share the benefits of consumer society. The many who find no work face a grim life in shanty towns such as those of Rio de Janeiro in Brazil - already overcrowded and beset by poverty and disease.
Population explosion
The united nation hopes people will learn to limit there children to two per couple.
Population growth next century will depend on when this target is reached. The graph shows three possibilities. The highest figure is the likeliest, and could well be exceeded.
Chaos in the streets
The city of the future is crowded, nightmare vision. Dirty, traffic choked the streets and pavements are squeezed between high rising buildings, in which solitary workers sit all day at computers in sound proof sealed offices. Some cities are, of course, just like this now, but it is going to get much worse. Britain, for example, already has the world's most crowded road networks, with 100 vehicles for every kilometre. With car use growing at its present rate, there will be 50 percent more traffic by 2030. This dependence on cars will cause yet more problems of congestion, accidents and pollution.
Throwaway society
European households each throw out a ton of rubbish every year. In the U.S.A, it is even more. Disposal by burying or burning delayed the environment - and the problem gets worse as people worldwide generate more and more waste.
Uncontrolled spread
Population in the industrialized nations of Europe and North America are growing slowly, but in the developing world, high birth rates double some countries numbers every 20-30 years. Millions flock to cities, hoping to share the benefits of consumer society. The many who find no work face a grim life in shanty towns such as those of Rio de Janeiro in Brazil - already overcrowded and beset by poverty and disease.
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