In this episode of Cool Science Radio hosts John and Lynn are joined by bestselling author Spike Carlsen joins the program. He uses a walk around his hometown to explore how every part of our urban landscape—from manhole covers and recycling bins to pedestrian crossings and bike lanes—impact and shape our lives in his fascinating work of popular science A WALK AROUND THE BLOCK: Stoplight Secrets, Mischievous Squirrels, Manhole Mysteries and Other Stuff You See Everyday (& Know nothing about)