Jose Rivera's "Marisol" -- a University Theatre production directed by Huan Bui that is now on stage at the Nadine Baum Theatre -- is a wild fable, a roller coaster tumble into a dystopian nightmare in which Americans wear gas masks on the street, citizens fight citizens, the climate is in full revolt and neo-Nazis roam the streets. Given the timeliness of its subject matter, it could have been written yesterday, but it's actually nearly 30 years old.