We went to the IMAX theater to watch a short film called "Amazing Caves", in which a teacher's assistant and a Ph.D. biologist from England gathered all kinds of microscopic creatures under extreme conditions. The ice caves, the Yucatan caves and the Grand Canyon cliff caves were all amazing. An idea of the two women's adventures can be gleaned from this site.
We also looked at minerals of all sorts, at fossils of various kinds, and at a great computerized "tour" of King Tut's tomb, which was quite informative. Then we stopped at Best's Seafood for a Chinese buffet, and made our way home. It was a grand day.