Why dozens of street lights on 2 major Calgary roads are turning blue (or purple)

The province says 70 street lights illuminating Stoney Trail and Deerfoot Trail are turning blue (or purple) due to a manufacturing defect — and it has no plans to replace them.

Streetlights Are Mysteriously Turning Purple. Here's Why

Why Faulty Streetlights Are Turning Cities Purple — and Why It's Worrisome

Environmental group finishes 7-year study on impacts of southwest ring road

The reason why street lights are turning blue in Calgary roads… - Commonwealth Union

A look at some of the films at this year's CUFF.Docs

Why are some street lights turning purple in Cincinnati?

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This is why some white LED streetlights are starting to turn purple

Calgarians weigh in on proposed budget increase, shifting tax burden from businesses

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