In this short animated video, The Atlantic takes us back some 400,000 years to the beginnings of our species’ long, meaningful and incredibly enabling relationship with light and then details that same relationship’s progress from animal grease and lighthouses to neon and television screens. “This ignited a relationship between people and photons that changed the course of mankind—and continues to evolve to this day. Take a tour through the visual history of light.” Dig deeper into the timeline here.