(Adrian Dennis/AFP/Getty Images)
People pose and photograph the COP15 Copenhagen logo at the entrance to the Bella Center on December 7, 2009.
For the next two weeks, until December 18, officials from more than 190 countries will be gathering in Copenhagen to write a new treaty on climate change.
For much of the year, there have been questions about whether the conference would come together and, if so, what it could accomplish at a time when much of the world is preoccupied with the global recession. In recent weeks, however, many of the world's economic powerhouses and biggest polluters, including the United States and China, have said they're serious about hashing out an agreement. Of course, with so many countries attending, "success" can mean different things to different people: Some want a political agreement; others want a legally binding treaty.
Here are five things that could determine the outcome.
