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Loop's newsletter aims to keep you abreast of developments relating to the environment. It will be updated every month and will contain stories that inform, refresh and even enthral. Your own anecdotal evidence of life on the frontline would be appreciated so email titbits into us at info@looprecycle.co.uk The main news story of real concern at the moment is George W. Bush's decision to abandon the all-important Kyoto Protocol. Kyoto Protocol - what it is and when it happened The Kyoto Protocol was drafted in Kyoto, Japan, in December 1997. 160 governments from different countries met to discuss climate change and what could be done in order to decrease the amount of greenhouse gases' emissions through human activities. The main points
Web Sites: Kyoto Protocol, the complete report
www.cnie.org
How emissions of greenhouse gases affect Climate Change Some scientists and ecologists believe that the greenhouse effect is a cause of global warming. The atmosphere is composed of different gases such as oxygen, carbon dioxide, nitrogen and water. Carbon dioxide and water vapour are said to be the two main greenhouse gases because of they retain the heat irradiated by the Earth through infra-red radiation. That means that the temperature on Earth depends on the balance between the energy radiation emitted by the Sun and the radiation emitted by the Earth. Some of the energy from the Sun penetrates the atmosphere and warms the Earth's surface. Infra-red radiation is emitted from the Earth to cool it down, while some of these are trapped by greenhouse gases in the atmosphere, which keep the heat inside. Nevertheless, it is necessary make a distinction between natural greenhouse gases and the human-made ones that enhance the greenhouse effect, destabilising the energy balance on Earth and consequently heating up the whole planet. Carbon dioxide is found in nature through the effect of volcanoes' eruptions and recycled through natural pathways. Increasing Carbon dioxide in the atmosphere will increase the greenhouse effect. The effect of human activities such as the destruction of the rain forests and burning fossil fuels is the main cause of temperature change since it has altered the balance of the climate system. Other greenhouse gases are methane, nitrous oxide, ozone and synthetic compounds such as chlorofluorocarbons used in refrigerators and in air conditioning systems. Web sites...
www.cnie.org/nle/clim-2.html |
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