If you have ever closely observed a helicopter, you must have noticed the red and green lights. In fact, these lights are not only present on helicopters but also on commercial and private airplanes.

(WHTM) — We see traffic lights all the time. Sometimes we get green lights, and sometimes we hit all the red lights on our commute to work. But, while sitting at a red light, have you ever wondered ...

If you've ever been hanging out on a tall hill at night, you've probably seen some lights flashing in the dark sky above. No, it's not a mysterious UFO — the kind there are problems studying – spying ...

Modern shipping makes use of all manner of relatively new technologies, from using GPS for navigation to building dual-fuel engines in a bid to cut down on emissions. However, a number of key shipping ...