Category: Videos

How Different Are Different Types of Dogs?

The dog (Canis lupus familiaris) is far more variable in size, shape and behavior than any other living mammal, but most experts now believe that all dogs, no matter how different, originated exclusively from...

put your body to the test

How Much Work Does It Take To Get Ripped?

Despite what television ads and some health websites would have you believe, getting ripped takes time. This is particularly true if you are attempting to reduce body fat in addition to building muscle, as...

Leonardo da Vinci Machines In Motion

Models of Machines invented by Leonardo da Vinci. All models are made from scratch. No computer graphics is used while videos creating. For more info please visit