After complaints, Phoenix to install dimmer LED streetlights

After four years of installing LED streetlights, Phoenix responded recently to concerns that the harsh white lights could negatively affect human health, blind older drivers or block astronomers' views of the nighttime sky. These drawbacks have often overshadowed the environmental benefits as LEDs are expected to cut energy use in half. On Nov. 30, the City Council approved a contract with Ameresco, an energy-efficiency company, to install lower-intensity LED streetlights that shine a yellow or amber-looking light, rather than a jarring white or blueish stream