Swarthmore students arranged a couple buses to go to the 350.org /Sierra Club/Hip-Hop Caucus rally against the Keystone XL pipeline , so I went along for the ride. It was extremely cold, but I made a witty sign and my sister and niece came out, and we had a great time (4 hours seems like the appropriate amount of time for me to spend with my family). Here are some pictures: Why that exact number, I don't know. This is probably my favorite picture. George's hounddog brother from another mother! People really came from all over. I haven't heard an NPS estimate of how many people came, but organizer self-estimates were between 35 and 50K. Given the high temps around freezing, with a wicked wind coming off the tidal basin, I think that's pretty great. Word. E & N with my sign Crazy guy unaffiliated with the rally The Lorax Trying to get a shot of the size of the crowd Lots of polar bears in attendance, this one had the mos...