The Clocks That Time us

Where did all these inventions come from? How do they work? And how do they reflect—even define—the values of our culture? From prehistoric times to the 21st century, inventions have changed the world, enabling humans to produce more food and energy and to establish social order and cultural meaning. In fact, great inventions have marked a number of key turning points in human history, transforming society and our daily lives.

We’re surrounded by inventions. Consider the clocks, appliances, and transportation that coordinate our days. Or the televisions, cell phones, and social media that connect us to each other. And the shopping malls, department stores, and catalogs that define the modern retailing experience.