Mark your calendars: This week, Net artist Ken Goldberg presents "Invisible Hands & Naked Eyes," a lecture on telepresence. Goldberg, a UC Berkeley engineering professor, is well-known for his pioneering works, such as the classic "Telegarden," which often provoke website vistors to engage in remote experiences. His artworks often force us to question the authenticity of what we see online, from afar. The lecture takes place at the Art Center College of Design in Southern California on November 15, at 4pm.