You can build a model of the Great Pyramid, but first you need to scale it down. To do this, you will need to make the pyramid 3,000 times smaller than it really is! To achieve that, every 30 ...

A model of a Lockheed Constellation built from a non-standard scales nearly 60 years old. Back then, most models were designed to fit a very specific box size. [Courtesy: Terry Moore] This holiday ...