Piero Madau is a Distinguished Professor of Astronomy and Astrophysics at the University of California Santa Cruz. Born and educated in Italy, he graduated magna cum laude in Physics at the University of Florence, and received a PhD in Astrophysics at the International School for Advanced Studies in Trieste. He came to the United States in 1987 with a postdoctoral position at the California Institute of Technology, then moved to the Space Telescope Science Institute first as a Davis Fellow and then as a junior faculty. His interests in cosmology and galaxy formation brought him to the Institute of Astronomy at the University of Cambridge as a tenured faculty, and then in 2000 to the University of California Santa Cruz as a full professor in the Department of Astronomy and Astrophysics.