One of the things no one has really brought up yet in terms of the massive crowd estimates being bandied about for Barack Obama’s inauguration is that the date of the presidential inauguration is more often than not one of the coldest days of the year in Washington. Well the Washington Business Journal reported today that Del. Eleanor Holmes Norton is asking the federal and local government as well as private and nonprofit organizations to open up more buildings to house crowds on Jan. 20, a step that would become vital if temperatures are extremely low that day. The article tiptoes around it, but Norton is also clearly largely concerned that there could be 4 million people walking through the District with no place to pee.