This Saturday, Nano-High features a talk by UC Berkeley professor Dacher Keltner on “A Darwinian Tale of Survival of the Kindest.” Keltner studies the social functions of emotions, arguing that they evolved to enable individuals to respond to the problems and opportunities that define human social living. He also studies teasing, as one process by which individuals socialize, moralize, negotiate status hierarchies and conflicts, and express potentially embarrassing affections. Berkeley Lab staff are urged to encourage their high school-age children to attend at 10 a.m. Saturday in 1 Pimentel Hall on the UC Berkeley campus. Register on the website. Note: In case of an overflow crowd, high school students will have seating priority.