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for sustaining biological resources and the services they provide. major league baseball los angeles dodgers full over printed shirt For example, numerous opportunities exist for combining management for sustainable forestry and sustainable

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Under the United Nations Framework Convention on Climate Change , governments have agreed to take action to stabilize greenhouse gases at a level that “prevents dangerous anthropogenic major league baseball los angeles dodgers full over printed shirt interference with the climate system.”16 Yet neither the UNFCCC nor subsequent negotiations have been able to agree on a level that is “dangerous.” The level at which greenhouse gases are stabilized will ultimately determine how much damage to human and nonhuman interests is tolerated. For instance, nations could agree to stabilize greenhouse gases at a level that protects human health but allows significant damage to endangered species and ecological systems. Therefore, the decision about the ultimate level of stabilization raises serious ethical questions about what the duties of human beings are to other forms of life, as well as our duties to future generations and to those

in poverty, who will suffer the most from human-induced climate change. Emissions of some greenhouse gases are a result of human activities, and these create an enhanced greenhouse effect. These anthropogenic (human-induced) greenhouse gases include carbon dioxide, methane, nitrous oxide, and ozone-depleting substances. Human activities have altered the chemical composition of the atmosphere; as a result, the earth’s climate is changing. Over the past two hundred years, emissions from cars, power plants, and other human inventions have led to about a 30 percent increase in the natural concentration of carbon dioxide and more than a 100 percent increase in the atmospheric concentration of methane. Globally, the average temperature of the earth has warmed over 0.55°C since the mid-nineteenth century, when measurements began. Many of the opportunities discussed above in the areas of energy, water, agriculture, industry, urban systems, and human health are ultimately opportunities