In Search of Darkness
Death Valley National Park has one of the darkest skies in the United States — for now. It seems the visible universe is under threat of annihilation from Las Vegas as that city grows and dumps more and more light into the sky. We meet up with ranger Dan Duriscoe, who is part of the National Park Service’s Night Sky Team, as he observes the dome of light emanating from Vegas. And stay with us as we travel to Las Vegas to see if anyone there really cares.