Some things are so ubiquitous that it's easy to forget they're designed for a reason. With more than 300,000 traffic lights set up across the United States, it's easy to take how they look for granted ...

A historic change in roadways could begin in the United States, where a new color could be added to traffic lights, the white light.White light would not replace the traditional re ...

This simple chemistry demo shows how a colorless liquid can change colors multiple times using only a few ingredients. The ...

The warning lights on the dashboard are not there just for decoration. Each one serves a specific function and is designed to ...