Houston Audubon's Lights Out program took flight and they asked building owners and residents to turn off their lights when migratory birds are flying through. And it worked.

The Empire State Building's lights will be lit up in gold and cyan on Friday, to celebrate the 45th anniversary of ABC News' iconic late-night show "Nightline." ...

HOUSTON — You may notice Houston skyscrapers and buildings a little dimmer ... can put on your lights to point the lights down instead of straight up into the sky, that can make a big difference ...