(Editor’s Note: This file presents news and information from the Copenhagen climate change conference on Dec. 16, distilled from news outlet reports. Check for updates during the day.)

: The next 24 hours will make or break the Copenhagen climate conference, said the U.N.’s chief climate negotiator. More than 100 world leaders will soon be on their way to the conference, but whether they have anything significant to agree on has yet to be negotiated.

: The fate of climate change legislation in the U.S. Senate hinges on what happens in Copenhagen, Sen. John Kerry said today. What has to happen, he warned, is an agreement that wrings concessions from China and India. Absent that, he predicted, U.S. legislation will founder on domestic economic fears.

: "I’m stuck between a rock and hard place," said the frustrated chief of the U.N. climate conference, as he stood before thousands of protesting people. Most were protesting the lack of action in Copenhagen. Hundreds were arrested.

In what could be the most significant achievement in Copenhagen, climate negotiators are close to agreement on the idea of paying to keep the world’s forests from being cut down. Trees store vast amounts of CO2, the single biggest contributor to climate change.

It’s "deal or no deal" time in Copenhagen, and the poorest, fastest-growing countries have the upper hand, says The Los Angeles Times.

In an emotional speech, Al Gore told the conference that the world should meet again next July in Mexico to try and create the binding climate change agreement that probably won’t be reached in Copenhagen.

For perspectives, news and information from environmental groups at the conference, check out the The Copenhagen News Collaborative.