All plants and animals, including humans, move during their lifetimes, but some take truly harrowing or magnificent journeys to new lands and habitats. This fall the La Brea Tar Pits and Museum will join UCLA Institute of the Environment and Sustainability to produce a three-night conversation between the people of Los Angeles and the leading experts on migration. For many species, migration is a question of when, not if. Sometimes it is the result of fresh opportunities in unfamiliar terrain. Other times it is driven by external forces, natural and unnatural. Tonight’s conversation will get to the root causes of migration – From floods and fires to developing societies.