to tell us about the themes is melissa alexander. tell us about some of the previous themes we have had. >> we have had sex ploration, sugar, red, blue. many things. >> what is the theme tonight? >> rock, paper, scissors. we are having a tournament tonight, but we have also used as a jumping off point to explore lots of different ideas. you can find out about rock, paper, scissors as a game as a reproductive strategy. you can interact with a piece of art created by lucky dragon. you can get your hair cut from a cool place called the public barber's salon. they use scissors only. you can find out about local geology, too. >> that sounds like fun. let's check it out. >> this is the most common rock on the surface of the earth. interesting thing is, most of this rock is covered over by the ocean. >> error congested a cool presentation on plate tectonics. tell us about what we just saw. >> we wrapped up a section of a lesson on a plate tectonics, here at the exploratory and -- exploritorium. >> are you excited to see people here having f

before we go, i want to thank melissa alexander for having us here tonight. how did you know san francisco needed a night like tonight? >> thank you for coming. everybody loves the exploratorium. we are reluctant to push the kids out of the way in the day, so i knew we needed to create one evening a month just for the rest of us to have a good time, the adults. >> absolutely. where can we find out what is coming up after dark? >> that is easy, exploratorium .edu/afterdark. >> thank you. thanks for watching >> just a few steps away from union square is a quiet corner stone of san francisco's our community to the meridian gallery has a 20-year history of supporting visual arts. experimental music concert, and also readings. >> give us this day our daily bread at least three times a day. and lead us not into temptation to often on weekdays. [laughter] >> meridians' stands apart from the commercial galleries around union square, and it is because of their core mission, to increase social, philosophical, and spiritual change my isolated individuals and communities

before we go, i want to thank melissa alexander for having us here tonight. how did you know san francisco needed a night like tonight? >> thank you for coming. everybody loves the exploratorium. we are reluctant to push the kids out of the way in the day, so i knew we needed to create one evening a month just for the rest of us to have a good time, the adults. >> absolutely. where can we find out what is coming up after dark? >> that is easy, exploratorium .edu/afterdark. >> thank you. thanks for watching >> you can see that it is amazing. you can hear that it is refreshing. you reach for it because it is irresistible. and the taste. simply delicious. san francisco tap water. it engages the senses. 311 is an important resource for all san franciscans. shouldcommissioner turman: pres. president mazzucco: welcome to the wednesday, february 1, 2012 police commission hearing. seated on the dais with us tonight is the director of the occ. police chief suhr is at a police conference. with us is deputy chief kevin cashman. please call the consent calendar line item

before we go, i want to thank melissa alexander for having us here tonight. how did you know san francisco needed a night like tonight? >> thank you for coming. everybody loves the exploratorium. we are reluctant to push the kids out of the way in the day, so i knew we needed to create one evening a month just for the rest of us to have a good time, the adults. >> absolutely. where can we find out what is coming up after dark? >> that is easy, exploratorium .edu/afterdark. >> thank you. thanks for watching [applause] >> good evening. welcome to the meeting of the commonwealth club and forum, connect your intellect. you can find us online. you can follow the best of our conversations on twitter. i am the author of the "this is your brain on music. " i am a professor of psychology and behavioral neuroscience. i am delighted to introduce you to my friend, one of my famous -- favorite guitarists and musicians. he discovered the guitar at a young age. he has played at notable vilnius such as the -- notable venues such as montrose and carnegie hall. >> i would like

to tell us about the themes is melissa alexander. tell us about