The earliest examples of pictorial written communication date back to 3500 B.C. (Piechota). In the centuries following the invention of written communication, only a small portion of human society learned to read and write. Those who learned to read... | READ MORE >
Fossil fuels have been an essential source of energy since humans first discovered coal. From Neolithic times to the eighteenth century, humans made only minor improvements to coal and wood-burning technology. The steam engines of the 1700s were the... | READ MORE >
In the late nineteenth and early twentieth centuries, sex education in the United States was strongly informed by Victorian values. For instance, sex education of the time taught that sexually transmitted diseases were the result of punishment for... | READ MORE >
