by Marie JULIEN Agence France-Presse BERLIN, Germany (AFP) — With urbanization gaining pace and air pollution clouding the view in major cities, contemplating the stars in a pitch-black sky is fast becoming a rarity that tour operators are banking on as a new selling-point. From a total solar eclipse to the Milky Way to the Northern Lights, many experts at Berlin’s ITB, marketed as the world’s leading travel trade show, were making the case for […]