How people have made artificial light over the past 4,000 years reflects the history of economic growth in the world. One economist has explored the cost of light, starting in ancient Babylonian times and ending in the 1990s. He discovered that for most of the past four millennia, light was very expensive. Then, in the past 200 years, scientific advances caused the price of light to drop precipitously, and economies grew with a speed and intensity unknown before. Listen to hear how light became cheap and how its price demonstrates how economic growth happens.
View Voluntary National Content Standards in Economics
View Additional Resources