The plan will replace more than 100,000 streetlights in Minnesota, saving up to $5,000 a month for a modest-sized city. The plan will replace more than 100,000 ... “It is night and day.

But over time, he said he was convinced of its success as technology improved. The city now has LED bulbs in about 1,000 streetlights and every traffic signal in the city. "Now, we're hearing ...

If you've driven past the Duluth Public Library, Fire Hall No. 1 on West First Street or Lake Place Park at night lately, you may have noticed something different.

A phenomenon known as "light pillars" illuminated the night sky above Graceville, Minnesota, ... like streetlights, can give off pillars. Get updates to this story on FOXWeather.com.