Pixel art is a form of digital art, where images are edited on the pixel level. The aesthetic for these kind of graphics comes from 8-bit and 16-bit computers and video game consoles.

For almost 20 years, Motomachi High School in Hiroshima has tasked its art students with interviewing hibakusha -- atom bomb survivors -- and turning their harrowing testimonies into paintings.

National Mural Day on June 28 is a tribute to public art. Here's where to see it in Houston.