1. Kyoto Protocol

2. United Nations Framework Convention on Climate Change
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3. CO2 Emissions by Country
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4. CO2 Emissions by Country
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5. Kyoto Protocol Signed, not ratified. Signed and ratified.
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Signed, not ratified.
Signed and ratified.
Signed, ratification pending. No position.

6. Central Historical Question
Why didn’t the United States ratify the Kyoto Protocol?