When It Is NOT a UFO airplanes

When It Is NOT a UFO

No, this isn't a UFO. It's a kite in the form of a tetrahedral truss. Alexander Graham Bell discovered that the tetrahedral truss, created from three-…
Beautiful North Korea Headlines

Beautiful North Korea

I think that North Korea is one of those countries people are just lovely and nature are stunning. I am trying to make a review of the country, whilst…