There has been a lot of talk lately about the world’s swelling population. Last Monday a baby born in the Philippines brought us to a total of 7 billion people on Earth. This weekend my dad emailed me a link to a calculator on the BBC News website that allows you to enter your birth date and find out where you fit in to the world’s population growth. I think it’s an effective data visualization tool. According to the calculator, when I was born I was the 4,737,672,393rd person alive on Earth.