"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." In the daytime, the human eye holds a distinct advantage over those of other animals in terms of its ...

There was once a time when night vision goggles -- with their almost magical ability to see in the dark -- were only available to the military and law enforcement. Today, that technology is so ...

Investigators have yet to determine whether the crew of an Army helicopter was wearing the devices when the Black Hawk crashed into a civilian airliner last week. By Mark Walker and John Ismay ...