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A small, windowless building on Block 37 is dwarfed by glassy new high-rises. A viewer wonders how it managed to escape the wrecking ball. Geoffrey Baer shares the story behind this unusual building, plus the history of the Marshall Field’s holiday windows and Kermit the Frog’s commercials for milk in this week’s edition of Ask Geoffrey.

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A new energy initiative is encouraging area residents to get smart—by purchasing so-called smart thermostats–under a new rebate program that aims to cut heating costs. Will homeowners warm up to what is planned to be the country's largest smart energy initiative? We'll discuss the ambitious program with our panel of guests.

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Crain’s Chicago Business senior reporter Steve Daniels takes a closer look at the soaring cost of Peoples Gas' massive gas main replacement program and higher charges coming to Commonwealth Edison customers.