Scientists have discovered alarming connections between sleeping with lights on and serious health problems. Even minimal ...

We are destroying half the environment in our city every 24 hours — and most of us don’t know it. You may not have noticed because you were probably asleep while it was happening. Namely, we are ...

Timing plays a key role in determining whether turning off the lights ultimately saves energy. “Leaving the lights on might ...

During the migration, Lights Out Colorado -- a program supported by Dark Sky Colorado and the Denver Audubon -- asks residents to take simple actions to help protect the birds traveling at night: ...