The tsunami from the 1960 Chilean earthquake affected the entire Pacific Ocean and motivated the international coordination of tsunami research and warning systems around the Pacific. However, the 2004 Indian Ocean tsunami affected the entire world, and reminded that tsunamis are not a local or regional problem but a global issue.   This volume contains 15 papers, mostly presented at the 24th International Tsunami Symposium held on 14-16 July 2009 in Novosibirsk, Russia. They reflect the current state of tsunami science, including studies of recent tsunamis, tsunami statistics and warning, and modeling tsunami runup and inundation.