Avatar (2009 film) Avatar (2009 film) Avatar, marketed as James Cameron's Avatar, is a 2009 American epic science fiction film directed, written, produced, and co-edited by James Cameron, and stars Sam Worthington, Zoe Saldana, Stephen Lang, Michelle Rodriguez, and Sigourney Weaver. The film is set in the mid-22nd century, when humans are colonizing Pandora, a lush habitable moon of a gas giant in the Alpha Centauri star system, in order to mine the mineral unobtanium, a room-temperature superconductor. The expansion of the mining colony threatens the continued existence of a local tribe of Na'vi – a humanoid species indigenous to Pandora. The film's
Fictional currency by Frederik Pohl. Other plot factors can affect the worth of currency: for instance, in "The Moon Metal" by Garrett P. Serviss the world's currency standard must be switched from gold to a mysterious new chemical, "artemisium", after the discovery of vast mineral deposits in the Antarctic devalues all known precious metals. While modern fiat currencies lack intrinsic worth, some fictional currencies are designed to be valuable in their own right. Intrinsically valuable currencies are used in the Frank Herbert's "Dune" universe; the Dragonlance world of Krynn where steel coins are the primary currency and are more valuable than gold