How do writers build fictional worlds that feel real, especially when a world is a completely different planet from our own? In this lecture, go on a scientific tour of two constructed worlds: the planet Gethen, from Ursula K. Le Guin’s novel The Left Hand of Darkness, and Sukien, a world Professor Adler himself created for a Japanese television series. Look at the ways sci-fi writers pick and choose the science that makes these worlds work in fiction.