You can learn a lot about scientific advances from taking a tour of a medical facility. Check to see if Memorial Hermann is open to visitors while you're in the area.
You're spoiled for sightseeing choice in The Woodlands. Memorial Hermann is a great place to kick off here, but there are numerous other fine sights to check out. Cynthia Woods Mitchell Pavilion, Scrap Yard Sports, and Woodlands Mall are close to the health care institution and will top off your day nicely.