Changes In The Earths Environment Essay - 2133 Words

Changes in the Earths Environment The 20th century, especially in the second half, has been one of rapid change in the Earths environment. The impact of humans on the physical form and functioning of the Earth have reached levels that are global in character, and have done so at an increasingly mounting speed. 20 years ago the environment was seen as posing a threat to the future of humanity as death rates from natural hazards had increased dramatically since the turn of the century. The Earth though has always been plagued by natural disasters. Now, with the world population growing at a rapid rate more people are living in hazard prone areas. Events which may have gone unnoticed previously, only become hazards when there is†¦show more content†¦It is this growing world population, Burton et al (1978) suggest, that is the main reason behind why hazards are increasing and were seen to pose such a threat to humankind in the 70s. While the average number of disasters remained relatively constant at about 30 per year, death rates climbed significantly. As the growing world population requires the cultivation of land more prone to hazards, more people and property are thus exposed to the risk of disaster than ever before, and as Stow (1992) argues, the death toll inevitably rises. An example that shows the concern that humans faced from the environment can be exemplified by the Bangladesh cyclone of 1970, which killed approximately 250,000 people. Although part of the reason for so many deaths can be put down to a then poorly understood process, land-use can also be implicated. Because of a rising population, land in Bangladesh was reclaimed by the government and held against the sea. People in large numbers were then encouraged to occupy the area. An area which turned out to be one of great risk. Major disruption was inevitable Burton et al (1978) argue whenever population was in the path of such forces. 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