M ike Shriver in Linthicum wonders what became of a 2002 project called Enlighten Maryland. Participants had maps of the constellation Orion and circled the stars they could see on a clear February night. A total of 1,100 reports were processed into a map of Maryland light pollution. That map proved disappointing. But there's a good, zoomable dark-sky map for North America at baltimoresun.com/pollution


