The Living on Earth Almanac

This week, facts about…the largest advertising sign in history. In 1925, an electric sign for the Citroen car lit up the Eiffel Tower and brightened the City of Lights. These days, artificial outdoor lighting has created a problem for star-gazing people and migrating animals in urban areas.

This week, facts about…the largest advertising sign in history. In 1925, an electric sign for the Citroen car lit up the Eiffel Tower and brightened the City of Lights. These days, artificial outdoor lighting has created a problem for star-gazing people and migrating animals in urban areas.