In ""Part 1,"" a makeup man gets Miguel in his chair to make a monster mask. For ""Part 2,"" Kathy goes on a mission with a ""feather detective"" to see what bird made a serious impact with an Air Force jet. The Bloodhound Gang enters a greenhouse to start ""The Case of the Funny Money."" (Concludes in next episode.)
Diego and Robin start the day on a ship off the California coast, observing the individual patterns of a lighthouse's beam. They find out how lenses concentrate the rays of light emanating from a lighthouse or a buoy. Robin illustrates the convex lens at the Exploratorium. Also at the Exploratorium, Miguel bounces light with a curved mirror. He goes to the University of Arizona to see the grinding of a glass lens for the telescope at nearby Kitt Peak.MUSIC VIDEO: Light energy from the sun.
Kathy learns that there is more color in a green leaf than meets the eye. At the Exploratorium, Robin discovers what drives a magnificent light sculpture (the sun and many mirrors). Paco and Mary create their own light sculpture in the studio demonstration. The Bloodhound Gang tries to piece together ""The Case of the Missing Memory"" with a cassette tape that includes a snowy tree cricket chirping. (Concludes in next episode.)