Science fiction and fantasy fans love to argue about canon — both meanings of the word. Which stories in a fictional universe really "happened"? Which stories deserve to be enshrined as the best of the genre? We don't think either of those things is worth yelling about! Also, did you know that tsunamis can happen in lakes, rivers and even creeks? We talk to Aggeliki Barberopoulou with the USC Tsunami Research Center to learn more...