Carnegie Mellon University

metro21 lunch and learn flyer

February 04, 2019

Lunch and Learn: Light Smart: dark-sky friendly artificial lighting with Diane Turnshek

Join us on February 15, 2019 in Hamburg Hall Room 1002 from 12:00 pm - 1:00 pm for a Lunch and Learn with Diane Turnshek.  Diane will present her lecture titlted "Light Smart: dark-sky friendly artificial lighting."

Diane will highlight her Metro21 project Artificial Light Survey of Nighttime Pittsburgh. The goal of this project is to improve the quality of life for city residents, we are undertaking a light survey of the city at resolutions finer than can be done by open satellite surveys.  


80% of the people in the US cannot see the Milky Way. We've lost our connection to the night sky. As lighting technology improves, night turns into day, and, in the process, billions of dollars a year are wasted lighting the undersides of birds. The perception that bright night equals safety is pervasive, but unsubstantiated by scientific studies. In plant and animal populations and human medicine, scientists report negative effects of artificial light at night. With the advent of LEDs, lighting smart has become an imperative. The City of Pittsburgh is refitting 40K streetlights over the next two years -- replacing high pressure sodium vapor bulbs with much more efficient, 2700K or less, shielded, dimmable LEDs. To aid in future research and decision making, we will be flying drones over Pittsburgh on moonless, clear nights to make the first, publicly available, high resolution light pollution map of a city.

Join us on Feb 15 to learn more about this project and how important it is for all of us to reconnect with the night sky.