Don Harrington Discovery Center: Explore the new permanent exhibition “Discover through Time.” (9:30 a.m. to 4:30 p.m. Tuesdays through Saturdays and noon to 4:30 p.m. Sundays; 1200 Streit Drive; admission $14 adults; $11 seniors, military and students, and $9 children; 806-355-9547)