Representatives of 192 nations are gathering this week in Copenhagen to seek a consensus on an international strategy for fighting global warming. A new report has found that an overall warming trend is continuing. Another study suggests that the steps needed to slow that climb, or reverse it, will cost trillions of dollars.
Prior to this week's meeting, the United States announced targets to reduce industrial emissions. Just a day later, China announced its position. However, the two countries are taking different approaches.
Experts agree that a global agreement is unlikely. One major stumbling block: finding a way for richer and poorer nations to share the costs of switching to less-polluting technologies.
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