This video explains the history of the development of concrete technology, which has been used for thousand of years.

This video explains what writing materials were used by people before the invention of paper, how paper was invented, and how its usage has evolved over time.

A man in Michigan named Wally Wallington has discovered how to move and lift 20 ton concrete blocks by hand using only wood, pebbles, counterweights, and human power, which he demonstrates in this video.  His techniques could have easily been implemented by the builders of Stonehenge and the Egyptian Pyramids, for example.

This History Channel documentary is titled as being about “gunpowder,” but in fact it also covers others important developments that happened during the Middle Ages, including the Sahara salt caravans in the 1350’s, the banking families that were established in Venice, Italy in the 1400’s which ultimately financed the Renaissance, and the invention of the printing press in the 1400’s.

This interesting History Channel documentary talks about the development of all types of engines, including steam engines, sterling engines, electric motors, internal combustion engines, jet engines, rockets, microtechnology and nanotechnology motors, hybrid engines, and hydrogen fuel powered engines.

Many seasons of the History Channel “Modern Marvels” series is on Amazon streaming.