CAIRO, EGYPT - APRIL 02: Opera House seen in blue lighting from Cairo Tower during World Autism Awareness Day 2016 on April 2, 2016 in Cairo, Egypt. Major landmarks around the world are Lighting It Up Blue on April 1 and 2 to raise awareness about Autism Spectrum Disorders (ASD) for World Autism Awareness Day. (Photo by Roger Anis/Getty Images for Autism Speaks)
