If they can do it in Iceland, why not try the same in America? I believe it would be a wonderful opportunity for our young future scientists to experience the vastness of our universe by being able to gaze at the stars in a completely dark environment. Of course in order to do this we would all have to agree to shut out the lights for half an hour, say once every two or three months for an event we could call Star Gazing Night. Just think about the savings in energy and electric bills that would come as added value with this project.
The popularity of sites like "IFLS" and pop science figures like Neil Degrasse Tyson shows that there is already an underpinning of scientific yearning in the average American citizen. If city officials enabled the public to engage in science firsthand through an exploration of astronomy, the effects would be far more potent than, say, focusing heavily on STEM in school curriculum.
No, turning out the lights for 30 minutes in a city in the United States so that people can see the night sky would not help to spark and interest in science. In fact, this is a very bad idea in the United States that may cause an uproar. People who want to see the sky can buy a telescope.
This would never work here. Too many people would have such a difficult time, even for 30 minutes, adjusting to having no lights. There are certain people who just wouldn't be willing to sacrifice. In addition, having a dark city poses threats to those who are working at night and to those who may become victim to criminal threats.