It’s interesting that in a time of vast technological expansion and sophistication, the good old radio remains a societal constant. There is something comforting about tuning into your favorite frequency and letting the familiar voices wash you into pure listening. The radio feels like home. Now, using that cutting-edge technology, you can tune into any radio frequency from around the world. Wish you could be home in Milan? Zero in on its location on the map, sample the green dots, and listen to R105. Want to know what’s happening in Uyo, Nigeria? Go to Uyo’s green dots. In times of crisis, what do people all around the world have to say? —E.C.