The first one, the electron, was discovered in 1897, and the last one, this thing called the tau neutrino, in the year 2000. Actually just -- I was going to say, just up the road in Chicago. I know it's a big country, America, isn't it?
A primeira, o electrón, foi descuberta en 1897, e a última, esta cousa chamada o neutrino tauónico, no ano 2000. De feito -- Ía decir aquí ó lado, en Chicago. Seica é un país grande América, ¿non sí?