What Are Those Grids of Glass in the Sidewalk — And Why Are They Purple?
Listener Britt McEachern is a tour guide in San Francisco, and spends a lot of time walking around city streets. He's noticed grids of glass embedded in the sidewalk and wants to know what they are. Take a journey with reporter Jessica Placzek to learn the purpose and origins of these gems beneath your feet.
Additional Reading:
What Are Those Grids of Glass in the Sidewalk — And Why Are They Purple?
Quiz: Test Your Bay Area Knowledge
Reported by Jessica Placzek. Bay Curious is made by Olivia Allen-Price, Jessica Placzek, Katie McMurran and Rob Speight. Additional support from Julie Caine…
The skinny
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