During daylight hours%2c the thick bands of pollution girding the Los Angeles skyline are a constant reminder of how poor our air quality is.%26nbsp%3b But at night%2c the foul%2c chemical filled air traps the city%27s excessive artificial light%2c and in these long exposure images%2c our skies turn deep emerald green%2c lush amber%2c eggplant purple%2c and bubble gum pink.%26nbsp%3b All these glowing hues obscure the stars and what we think of as a proper night sky.%26nbsp%3bDesignHTMLWords: 75 Characters: 423