This is a recording of a NISE Network online brown-bag conversation held in December 2014 about the International Year of Light. In 2013, the United Nations proclaimed 2015 as the International Year of Light (IYL). More than 100 organizations from more than 85 countries are participating in IYL. During this conversation we discussed scientific organizations that would make great partners for IYL events, shared light-related activities and videos developed by the NISE Network, and talked about the science behind some of those activities.