Each year the International Dark-Sky Association (IDA) meets in Tucson, Ariz. for its annual get-together. Because the IDA embraces the ever-increasing transition toward sustainable planning and development, this year?EUR??,,????'?????<

The meeting takes place March 4?EUR??,,????'?????<

Because most of the population lives in or near cities and other urban centers, a key component of any urban development is planning for lighting. The IDA promises you?EUR??,,????'?????<

A second event is ?EUR??,,????'?????<

For more information visit darksky.org.