How were giant ancient structures like Stonehenge, or the towering Moai heads on Easter Island, assembled at a time when cranes and trucks were still hundreds of years away? Researchers at MIT have given more credence to theories that ancient engineers were masters of balance and leverage with a new experiment that produced giant concrete structures, some 25-tons in weight, that can be still be maneuvered by hand.
[Source: gizmodo.com] [ Comments ] [See why this is trending]