Is the United States Getting Darker?
Pink indicates lights that were present in 2012 but not 2016. Blue indicates lights that were present in 2016 but not 2012. Interesting that the US is far more pink than blue. Have dark skies initiatives been that successful? I also see that Ft Worth, TX got darker while Dallas, TX got marginally brighter. I wonder why?
Check out the other maps and notes on how they were created HERE.