MIGHTIER THAN THE SWORD: All the literati who aspire to be glitterati will be at the American Museum of Natural History this evening for the P.E.N. Literary Gala. Former New Yorker editor Tina Brown is a gala chair, tub-bucket Tim Russert puts down his bag of doughnuts to play M.C., and nasty but lovable old queen Gore Vidal receives the inaugural P.E.N./Borders Literary Service Award. Who else misses James Frey? Moving on, lock up your ring-tailed lemurs: The Puerto Rican Traveling Theatre will present Bad Blood (¡Malasangre!). The play is about a young Puerto Rican couple who face the choice of a dream job in Texas or the collapse of their marriage. Puerto Rico is the new Mexico!
[The P.E.N. Literary Gala, American Museum of Natural History, Central Park West at 79th Street, 7 p.m., www.pen.org; Bad Blood, Puerto Rican Traveling Theatre, 304 West 47th Street, 8 p.m., www.prtt.org.]