Exploratorium's shocking 40th anniversary kicks off

[ Music ] ^M00:00:08 [ Hissing sound ] ^M00:00:21 >> Hi. I'm Melissa Alexander. Welcome to the Exploratorium. We're turning 40 this weekend. We have a range of activities. Basically, the Exploratorium has been here, in this community, for the last 40 years, helping you enjoy the phenomena of the world. Here at the Exploratorium, we want you to investigate for yourself the phenomena all around you, be it sand, water, the way your own mind works, the way that electricity and magnetism works. We have all the things to do that here. Actually, we have over 500 things for you to explore. ^M00:00:59 [ Music ] ^M00:01:04 Tonight and this weekend we're just kicking it all out. We have Doctor Megavolts here tonight. ^M00:01:09 [ Hissing sound ] ^M00:01:16 >> Woo. How do you like -- how do you like this one? Sorry. >> This weekend, we're cutting up a giant block of ice into one piece instead of two pieces, so you'll have to find out what that's about. And all of our ex-cleaners have gone full blown. We've got the floor walks, activities, events all weekend for free this weekend. So you should come on down and help us celebrate our 40th anniversary. ^M00:01:42 [ Hissing sound ] ^E00:01:46