MUSIC: Grammy Award-winning classical/experimental group Kronos Quartet will be in San Francisco for four nights performing four different programs. Each performance will feature Jon Rose's Music from 4 Fences, along with a work by Terry Riley, pieces by composers from the Kronos: Under 30 Project, and tonight's special program includes works by Damon Albarn (Blur/Gorillaz).

8 p.m. // Z Space @ Artaud (450 Florida St) // $20

LECTURE: At this month's Long Now seminar, journalist Alan Weisman shares what he learned when he traveled the world to investigate what happens when humans stop occupying an area, and he'll discuss how our planet would respond without the relentless pressure of human presence.

7 p.m. // Herbst Theatre (401 Van Ness Ave) // $10 (advance tickets recommended)

PARTY: Party Like It's 1986 (way before the internet existed) and learn all about the ACLU's latest project, Demand Your Dot Rights, which is geared toward better protecting citizens from data-mining.

6 to 10 p.m. // 111 Minna Gallery (111 Minna St) // free (RSVP recommended)