V, the playwright formerly Eve Ensler, is hoping her new piece of theater can do for climate change what her “The Vagina Monologues” did for women’s rights. There's a one-night-only staging of “Dear Everything” later this month, with actors and activists Jane Fonda and Rosario Dawson speaking to the crowd. It will play Manhattan’s Terminal 5 on Jan. 30. The concert-musical hybrid has songs by Justin Tranter and Caroline Pennell, choreography by Christiana Hunt and direction by Tony Award-winner Diane Paulus. V will play the narrator for a story with 10 singers as well as a youth choir.