From colour-changing fire trucks to 'The Dress', many optical illusions have baffled the internet over the years. Now, a scientist from Harvard Medical School has discovered an illusion that might be ...

What's up with that? A Columbus Dispatch series seeking to answer questions about things you see in and around the community. I have to admit, this week's "What's Up With That?" query truly had me ...

Does a blue light keep you up at night? No, it’s not an alien invasion. The city of St. Paul has been gradually replacing LED street lights suffering from an unusual manufacturer’s defect — they’re ...

A streetlight along Tennessee Street seen in July 2021 shines with a purple hue, while a light seen in the background on the right in Watson Park provides a normal light. The process of replacing ...

There’s a purple-bluish glow coming from some of the lights above highways in Western Pennsylvania. It’s a bizarre look. What’s causing it, and is anything being done to address it? Chief Investigator ...