MUSIC: Smile presents a Save KUSF Benefit, featuring performances by The Trifles, The Twinks, The Danger Babes, and Hate Factory, along with DJ Neil Martinson spinning psych, soul, glam, bubblegum, and laserboogie. All proceeds go KUSF's legal fund.

9 p.m. // The Knockout (3223 Mission Street) // $10-20

READING: In his new book, HOT: Living Through the Next 50 Years on Earth, Mark Hertsgaard, who is considered one of the most informed and judicious journalists covering the issue of global warming today, illuminates how our day-to-day experience is going to change in the next five, ten, and fifty years.

7:30 p.m. // The Booksmith (1644 Haight Street) // free

FILM: Head to Hollywood with Kermit and his incorrigible gang in the Muppet classic, The Muppet Movie, featuring cameos by Mel Brooks, Steve Martin, Richard Pryor, Bob Hope, Milton Berle, Orson Welles and in their last film appearance, Edgar Bergen and Charlie McCarthy.

7:15 and 9:20 p.m. // Red Vic Movie House (1727 Haight Street) // $6-9