KEY POINTS IN THIS CHAPTER •
Climate involves sustained changes in environmental and weather-related conditions in an area around the world.
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There are many factors affecting climate, including orbital factors, oceanic factors, internal factors, and human factors.
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There are cyclical changes in the climate predicted by aberrations in the earth's orbit.
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Natural factors affect the climate, such as volcanic eruptions.
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Humans change the climate through many behaviors ranging from livestock management to carbon emissions to our usage of the soil and water for our own purposes.
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Some global warming is going to keep occurring, even if we limit fossil fuel consumption.
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Weather extremes due to global warming include increased storm intensities, more droughts, and more heat waves.
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