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Published: Friday 19 July, 2013

michael kors new watches michael kors new watches Air Pollution Solutions



Smog hanging over cities is the most familiar and obvious form of air pollution. But there are different kinds of pollutionsome visible, some invisiblethat contribute to global warming. Generally any substance that people introduce into the atmosphere that has damaging effects on living things and the environment is considered air pollution.



Carbon dioxide, a greenhouse gas, is the main pollutan michael kors new watches t that is warming Earth. Though living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities that involve the burning of fossil fuels such asgasoline and natural gas. In the past 150 years, such activities have pumped enough carbon dioxide into the atmosphere to raise its levels higher than they have been for hundreds of thousands of years.



Other greenhouse gases include methanewhich comes from such sources as swamps and gas emitted by livestockand chlorofluorocarbons CFCs, which were used in refrigerants and aerosol propellants until they were banned because of their deteriorating effect on Earths ozone layer.



Another pollutant associated with climate change is sulfur dioxide, a component of smog. Sulfur dioxide and closely related chemicals are known primarily as a cause of acid rain. But they also reflect light when released in the atmosphere, which keeps sunlight out and causes Ea michael kors new watches rth to cool. Volcanic eruptions can spew massive amounts of sulfur dioxide into the atmosphere, sometimes causing cooling that lasts for years. In fact, volcanoes used to be the main source of atmospheric sulfur dioxide; today people are.



Industrialized countries have worked to reduce levels of sulfur dioxide, smog, and smoke in order to improve peoples health. But a result, not predicted until recently, is that the lower sulfur dioxide levels may actually make global warming worse. Just as sulfur dioxide from volcanoes can cool the planet by blocking sunlight, cutting the amount of the compound in the atmosphere lets more sunlight through, warming the Earth. This effect is exaggerated when elevated levels of other greenhouse gases in the atmosphere trap the additional heat.



Most people agree that to curb global warming, a variety of measures need to be taken. On a personal level, driving and flying less, recycling, and conse michael kors new watches rvation reduces a persons carbon footprintthe amount of carbon dioxide a person is responsible for putting into the atmosphere.



On a larger scale, governments are taking measures to limit emissions of carbon dioxide and other greenhouse gases. One way is through the Kyoto Protocol, an agreement between countries that they will cut back on carbon dioxide emissions. Another method is to put taxes on carbon emissions or higher taxes on gasoline, so that people and companies will have greater incentives to conserve energy and pollute less. michael kors new watches

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