People use colored lights to bring awareness to a variety of different issues. Here's the meaning of purple porch lights. The ...

A new publication from Opto-Electronic Sciences; DOI 10.29026/oes.2025.240024, discusses generation of terahertz complex vector light fields on a metasurface driven by surface waves.

Purple light can help detect trauma on the neck, Horn said. In addition, Aurora swabs the necks of patients who report being strangled to be tested for touch DNA at the crime lab.

Grandma Hill lives in Natomas and got the video on her cell phone of little Johnny, 8, and Audrey, 5, praying about this mysterious purple light. "Hey, God. Please help me.

STEVE, or Strong Thermal Emission Velocity Enhancement, is an atmospheric phenomenon that accompanies auroras, such as an aurora borealis, more commonly known as the Northern Lights.

For a donation of $20, you can get a Purple Porch Project kit. It includes a purple light bulb you can put in your porch light and shine a light on domestic and sexual violence.

In Vancouver, more than 100 blue or purple street lights have been reported to the city — the result of a manufacturing defect involving a coating on the light.