I grew up in a small Southern town, and there were white people and black people. Coming to New York to go to Columbia, every time I went into the subway I was absolutely astounded because you see people from all over the world who actually live here - who aren't just here as tourists.
I would be absolutely astounded if population growth and industrialisation and all the stuff we are pumping into the atmosphere hadn't changed the climatic balance. Of course it has. There is no valid argument for denial. David Attenborough