Script for the challenge introduction

The Lighting Research Institute at Rensselaer Polytechnic Institute has information on research on energy saving lighting and biological effects of lighting
http://www.lrc.rpi.edu/

What are the problems with light pollution and over-illumination
http://en.wikipedia.org/wiki/Light_pollution

The International Dark Sky Association has information on keeping the night dark- and safe
http://www.darksky.org/

The Globe at Night project is a way for citizen-scientists to help keep night skies dark
http://www.globeatnight.org/