WASHINGTON - A cloak of invisibility may be common in science fiction but it is not so easy in the real world. New research suggests such a device may be moving closer to reality. Scientists said on ...

A never-before-seen video released Tuesday by a member of Congress appears to show a U.S. military Hellfire missile bouncing off a bright, shiny object that was being tracked off the coast of Yemen on ...

You don’t always need a lens to see a picture, you can use a pinhole camera instead. A pinhole camera uses a small hole that allows light to pass through to allow your eye to see an image. This was ...