The arts, technology, and science converge in this remarkable-looking $200 million building at Rensselaer Polytechnic Institute. Built into the slope of a hill, its entire north wall is a curtain of glass. A 1,200-seat concert hall sits inside, surrounded by gigantic curving panels of cedar wood — creating the effect of an enormous ship’s hull or a quirky, outer-space pod. Viewed from outdoors, the “ship” has quite a presence, especially at night, when it is illuminated. EMPAC projects range from cutting-edge art, dance, music, and explorations of the “tetherless world” (aka the Internet) to scientific research into virtual reality, human/machine interfacing, and other pushing-the-envelope, Star Wars-esque topics. One cool upcoming event: Take a Day For Yourself. Danish artist Mads Lynnerup asked Troy residents to take a day off from their regular routine, then documented their freedom breaks on whimsical short videos and giant posters (Oct. 1-Nov. 29).