When most people hear the term "industrial revolution," they immediately think of the invention of steam-powered machinery and the development of railways in the nineteenth century. However, this is not the first or only Industrial Revolution. We've really had three of these so far, and we're now in the midst of the fourth. This current industrial revolution, like those that came before it, is changing the globe, but it is doing so in a much more important way than any of the previous industrial revolutions; it is occurring at a faster rate, on a bigger scale, and having a far greater effect on life and industry.