The Obama administration announced this afternoon that the president has moved his appearance at the U.N. Climate Change Conference from Dec. 9 to Dec. 18, the final day of the summit. 

The date change signals an exciting and bold adjustment to Obama's involvement in the talks, as the last day is considered a crucial time in the talks with more leaders present, full of last-minute negotiations, and suggests that the president is confident he can help broker an agreement.  According to the White House statement:

Of course, the U.S. will still be well represented throughout the duration of the talks by State Department negotiators and Cabinet officials, but I am thrilled to hear that Obama has decided to raise the stakes.  This move could be a game-changer and help bring about some tangible results from the climate summit, hopefully putting to rest the whispers of doubts that have been circling over the past couple of months.  Help keep the momentum going by signing the Hopenhagen petition below.