haa ha ha! ha hha ha! [snortg] >> when the new california academy of sciences opened in 2008, it quickly became one of the top tourist magnets in the city. part of the cal academies' astronomical success is the weekly nightlife party. >> i am joined by helen who is here to school me on all the nocturnal activities that are getting ready to take place here. tell us a little about what we can expect to see at nightlife. >> we open up the doors every thursday night at the california academy of sciences. there are certain things you can see every week you can go to the museum visit the planetarium, and we bring in bars and a deejay or band. it is a different feel from during the day, something different every week. tonight , we have beer and music. -- tonight we have great beer and music. it is beer week. we have a dozen local brewers in african hall. we have a deejays to set up throughout the museum and a live performance at 9:00 p.m. tonight. >> what has been your favorite part as a participant or as an obser