Revised Impact environment Paper

Revised Impact - Earths climate is changing and we are the cause Throughout our planets history the climate has changed in dramatic ways What makes

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Earth’s climate is changing, and we are the cause. Throughout our planet’s history, the climate has changed in dramatic ways. What makes this point in time different from the past is the human influence on this change, and the rate at which this change is occurring. Scientific evidence shows us that carbon dioxide concentrations in the atmosphere have increased substantially since industrialization. The use of fossil fuels has become an increasingly important part of our lives. We rely on fossil fuels for everything from driving our cars, to heating our homes, to producing the products that we have come to rely on in our daily lives. As a result, carbon dioxide concentrations have increased approximately 30% since pre-industrial times. This has resulted in a strengthening of the greenhouse effect, which has played a critical role in warming our planet. http://www.climate.org/topics/climate-change/index.html (2010) Humans are also causing changes to our planet through other means, such as land use change. Trees, which are a valuable carbon sink, are being cleared at increasing rates to make room for urban development, human settlement and agricultural purposes. By removing these valuable carbon sinks, we are hastening warming even further. Methane concentration in the atmosphere has increased approximately 150% since pre-industrial times. This increase has also played a role in the warming that we are currently observing. Again, our dependence on fossil fuels, as well as land use changes, has resulted in increasing methane concentrations in our atmosphere. Intensive livestock operations, decomposing garbage in our landfills, decomposing organic matter and burning biomass all play an important part in this increase. http://www.esf.org/research-areas/life-earth-and-environmental-sciences/news/ext- news-singleview (2008) Greenhouse gases are produced mainly by the burning of fossil fuels
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The Earth’s climate is influenced by many factors, mainly by the amount of energy coming from the sun, but also by factors such as the amount of greenhouse gases and aerosols in the atmosphere, and the properties of the Earth’s surface, which determine how much of this solar
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This note was uploaded on 05/30/2011 for the course ECON 575 taught by Professor Bayer during the Spring '11 term at University of Western States.

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Revised Impact - Earths climate is changing and we are the cause Throughout our planets history the climate has changed in dramatic ways What makes

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