A little less than a third of U.S. senators will be staying up all night tonight to discuss climate change on the Senate floor. 

Twenty-six Democrats and two independents (the list is below) are currently participating in the 35th all-night session in American history (the last was Ted Cruz in September 2013). They began at 6:26 p.m. and plan to go until 9 a.m. tomorrow, and the idea is to bring more attention to the issue and possibly convince the rest of Congress to pass climate change legislation, hopefully in the next three to five years.

Republican Jim Inhofe also took part, spending 45 minutes to discuss all the reasons why he thinks climate change is not real. And yes, he mentioned that it's been cold lately, as he is wont to do.

Democrats who are not taking part will be Mark Begich of Alaska, Kay Hagan of North Carolina, Mary L. Landrieu of Louisiana and Mark Pryor of Arkansas. The New York Times points out that they are particularly vulnerable in the upcoming elections and three of them come from states whose economies rely heavily on oil or gas production. That could have something to do with their absence. Or maybe they just wanted to get a good night's sleep.

If you want to stay up with the senators, you can follow the #Up4Climate hashtag or watch on C-SPAN 2 (streaming here).

Scheduled to speak tonight: