12.55pm GMT

Democrats in the Senate are getting ready to wind up their all-nighter for the climate.About 30 Democrats took to the floor - or about half of the caucus - during the 15-hour speechathon.

As the Senators themselves conceded in a conference call before the marathon session, there is no prospect of getting climate change legislation through the current Congress.

But getting 30 or so Senators to stand up and publicly embrace climate change is still a big deal for a party which fled from the issue after the collapse of a climate bill in Congress in 2010.

It’s a personal victory for the Rhode Island Senator, Sheldon Whitehouse and the Hawaii Senator, Brian Schatz, who helped put the speaking roster together . As Coral Davenport reports over at the New York Times, Schatz also deserves a shout-out for helping senators make it through the night:

Operating out of a war room near Mr. Reid’s offices, Mr. Schatz and his staff helped ensure that the senators had everything they needed to make it through the long night. Included were thick binders of talking points, as well as plenty of charts, graphs and visual aids, like Senator Mark Udall’s poster of raging wildfires in his home state, Colorado. There was a detailed schedule, with Mr. Schatz planning to speak in 30-minute blocks spread throughout the night and totaling five hours. He brought Hawaiian Kona coffee and macadamia nut chocolates to help fuel his colleagues’ overnight slog.

The real test will be the degree to which the all-nighter changed the conversation on climate change, and opened up the possibilities of passing a climate bill in Congress.

It certainly solidified a few new memes and talking points. Expect a lot more talk about the Koch billionaire oil brothers.

Only one Republican took to the floor during the 15-hour exercise, and that was the Senate’s “denier-in-chief”, the Oklahoma Republican, Jim Inhofe. The anti-climate fringe was out in force on social media through the night.

And as Energy & Environment reporter Nick Juliano tweeted, Democrats alienated at least one potential supporter, Susan Collins, Republican of Maine, by failing to even invite her.

‏@nickjuliano 15h.@SenatorCollins, who introduced a climate-y bill this afternoon, says she wasn’t asked to participate in ‘partisan exercise’ talkathon

But it is at least a start.