#27: Concrete
Sometimes, we humans forget that civilization has existed for thousands of years. Being the egotistical people that we are, we like to think that at this current point in time, we are the creators of everything. But that just isn’t the case…
Did you know that concrete was invented by the Romans? This very critical and useful technology has been helping human civilization for thousands of years. It might seem like a simple building material, but it is still used today.