This month, audiences are making their return to the world of Pandora with the long-awaited sequel to James Cameron's ambitious, cutting-edge blockbuster, "Avatar: The Way of Water." For all of us at home, it has been a long 13 years since the original took over the world — long enough that some of us can't even seem to remember the first film's significant cultural impact. But, for Zoe Saldaña, who is returning to reprise her role as the Na'vi princess Neytiri in the "Avatar" sequel,...