the architect is talking about the glass, which has a mike skoptic layer of silver for thermo protection. >> there's a gap in the middle of the two pieces of glass. it conduct heat. >> there are 14,000 individual panes of glass. >> the less has to take and at the same time shs the more visible light, the less lighting you need. >> state of the art glass wrapped around a smart building with a brain. how energy efficient is this building? take the comcast center behind me. it's 50% more energy efficient than that building and liberty one built in the 11980s is four times more efficient than that. >> it's by inspiring local workers. the next tallest skyscraper. >> we're following several new stories at 5:00. >> including a bright spot for the boardwalk. a long-awaited attraction starts spinning. we're taking you along for the ride. >>> we have bitter cold temperatures. you're going to wrap uptight if you're headed outside. this nail-bite. ing cold weather is here for quite awhile. i'll track the forecast. >>> if you have to be outside, it's time to bundle up. coming up, we'll show you how f