Purple streetlights cast a mysterious, eerie and fleeting glow across the nation
A purple wave of faulty streetlights has swept across the USA, generating incorrect theories, bad lighting and fans of an accidental aesthetic.
Energy Central19h
Smart Lighting For Sustainable 21st Century Cities
Cities produce 70% of greenhouse gas emissions. Smart public lighting systems can reduce emissions by 1.4 billion tons annually, equivalent to removing 1,250 power plants. Smart lighting systems can ...