anthro notes ch.23

anthro notes ch.23 - Ch.23 The Changing World Global...

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Ch.23: The Changing World Global Climate Change: Along with rising temperatures, shrinking glaciers and melting polar ice provide additional evidence for global warming The causes of global warming are mainly anthropogenic: caused by humans and their activities The Greenhouse Effect: a natural phenomenon that keeps the Earth’s surface warm Water vapor, carbon dioxide, methane, nitrous oxide, halocarbons and ozone Without greenhouse gases life as we know it wouldn’t exist Greenhouse gases have increased since the Industrial Revolution and today greenhouse gases have reached their highest concentration and continue to rise Climate Change: explains that beyond rising temperatures there have been changes in sea levels, precipitation, storms, and ecosystem effects The preferred term to global warming The IPCC (Intergovernmental Panel on Climate Change) deals with climate change Radiative Forcings: factors that work to warm and cool the Earth Positive Forcings, including those due to greenhouse gases, tend to warm the Earth Negative Forcings, such as certain aerosols from industrial processes or volcanic eruptions, tend to cool the Earth If forces remained in balance there would be no warming or cooling but this is not the case 1997 Kyoto Protocol: the agreement signed by 170 countries that imposes mandatory caps on greenhouse gases through 2012 Alternatives to fossil fuels include nuclear power and renewable energy technologies, such as solar, wind and biomass generators Ecological Anthropology: the field focused on how cultural beliefs and practices helped human populations adapt to their environments and how people used elements of their culture to maintain their ecosystems Attempt not only to understand but also find solutions to environmental problems Also known as Ethnoecology: any society’s set of environmental practices and perceptions; a cultural model of the environment and its relation to people and society Many indigenous groups did a reasonable job of managing their resources and preserving their ecosystems with traditional ways of categorizing resources, regulating their use, and preserving the environment
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Indigenous ethnoecologies increasingly are being challenged as migration, media
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anthro notes ch.23 - Ch.23 The Changing World Global...

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