Ottawa is gradually becoming home to some 58,000 LED streetlights — even as a recent health warning has some U.S. cities rethinking the energy-saving strategy. In 2015, the city entered into a partnership with Energy Ottawa, a subsidiary of Hydro Ottawa, to convert its old sodium and metal halide lights to LEDs over a four-year period. "And once you disrupt that light — once you add light in the nighttime — that throws off our biochemistry. The city says its new LED lights possess a number of benefits, including lower maintenance costs and better visibility for pedestrians, cyclists and drivers. Listen to the entire interview with Robert Dick here.

Source: CBC News October 04, 2016 12:11 UTC