By Hamish Russell (University of Massachusetts Amherst, USA). So before I head home after six of the best months I could have asked for, I’ll give a little update on my travels. The first port of call after leaving Philadelphia was Washington D.C., the capital of the USA. I spent my two days in D.C. mainly on and around the National Mall visiting pretty much everything, starting with the Lincoln Memorial on the west side and ending with the Supreme Court building to the east. I also spent some time in the Smithsonian’s Air and Space Museum, which was huge, but somehow made to feel small by the sheer number of people inside…