'Feelings are Facts,' by artist Olafur Eliasson and architect Ma Yansong, Beijing, China

Into the light. International Day of Light

Happy International Day of Light! Held on May 16, it marks the anniversary of the invention of the laser by the American physicist and engineer Theodore Maiman in 1960. This pioneering creation helped revolutionize fields from communications to health care and lasers are now found in everything from printers and barcode scanners to surgical devices. Today's event also celebrates light's presence in every aspect of human existence, from art and culture to science and technology.