When millions of people turn off their lights for Earth Hour each year, something remarkable happens in the night sky above ...

Columbia college student Tripp Roche has a plan to bring programmable LED lighting to the downtown skyline. Some buildings ...

STRONGSVILLE, Ohio -- The city is borrowing $7.6 million to make the Walter F. Ehrnfelt Jr. Recreation and Senior Center and other municipal buildings more energy efficient.

DENVER — The Denver City and County Building and the McNichols Building will be lit up red at night this week to commemorate the 160th anniversary of the Salvation Army.Gov. Jared Polis declared ...

PORTLAND, Ore. — Some of Portland’s most iconic buildings will shine brightly once again as the Bird Alliance of Oregon’s Lights Out initiative comes to an end.Buildings like the Wells Fargo ...

Flashing green lights in Detroit are part of Project Green Light, a network of real-time video feeds designed to reduce crime in the city.