A Sweet Glow--the Secret Behind the Domino Sugars Sign by RadioRanger published on 2013-05-05T21:18:22Z It’s hard to imagine downtown Baltimore’s skyline without the warm, neon glow of the Domino Sugars sign. It’s a beloved icon, and as of this month – April 25th to be exact – it’s been shining bright for 62 years. Signal contributor Melissa Gerr brings us a story about the history of that giant sign, and the secret of what really makes it glow. Genre Documentary Radio