Children on either side of the US-Mexico border played together despite a fence dividing them — thanks to three pink seesaws erected by a pair of California professors. The teeter-totters on the outskirts of El Paso, Texas, and Ciudad Juárez in Mexico are the handiwork of Ronald Rael, an architecture professor at the University of California, Berkley, and Virginia San Fratello, an associate design professor at San José State University, The Guardian reported. “One of the most incredible experiences of my and @vasfsf’s career bringing to life the conceptual drawings of the Teetertotter Wall from 2009 in an event filled...