It's remarkable how much science you can find just in the halls of Thompson and Harned.
Black, in the expansion of pi (3rd floor)
The length of the Mississippian age, rounded to the nearest whole standard square tile, times four (1st floor)
(salmon+red)^green+gray+blue, in the character tables (3rd floor)
Size, in small tiles, of Uranus (2nd floor)
Precessional period of the Foucault pendulum, to the nearest hour, divided by three plus one (1st floor)
Position of the third discrepancy between the two DNA sequences (2nd floor)