The Natural History Museum’s First Fridays series closes for the season on June 5 from 5-11 pm, and they’re taking the party outside for the finale. The night begins with tours/lectures including “Mathemagician” Arthur Benjamin on “The Magic of Math” and “How Bird Watchers Can Save the World” by Rick Bonney of the Cornell Lab of Ornithology. Live music by Hanni El Khatib, Chicano Batman, Avid Dancer. Spinning tunes is resident KCRW DJ Raul Campos featuring Captain Planet. Tickets: $20, free for Museum members.