Eight Forty-Eight talks with WBEZ blogger and architecture critic Lee Bey about proposed plans to erect a 2,000-foot skyscraper at the site of Chicago’s old post office. For 30 years, NASA’s space shuttle program kept Americans looking up at the stars. Adler Planetarium Master Educator Michelle Nichols-Yehling tells Eight Forty-Eight what was learned from the shuttle program and where to look next. And comedy duo Kellen Alexander and Seth Dodson join the show to share their picks for the weekend for the latest installment of The Weekly Guide. And violinist Katarina Visnevska teams up with old-school DJ Matt Warren for a unique combination of classical instrumentation and turntable tricks.