For all the things Romans got wrong (lead pipes anyone?) did you know we’re still using a less advanced concrete than they did? Consider some of the massive structures in Rome that have passed ...

Imagine you’ve just gotten to Mars as part of the first contingent of settlers. Your first challenge: build a long-term ...

How to Make a Concrete Mixer for Kinetic Sand In this video I show you how to make concrete mixer model from cans pepsi . You will get amazing concrete mixer model that will impress all your ...