By David Lennon - imagining cities without LP, filmed in 4k. What have we lost? What will we gain?
By NatGeo - light pollution levels compared, stars as seen by a camera
By CBS News - interview w/ Int'l Dark Skies Exec Director, discussion on LED changeover
By Bigwhofan - no interviews or people stories, just some thoughts, quick summary to music
By SciShow - 10 min - more technical oriented, covers energy waste, global warming, bats, birds