Topic 1
Overview of Energy


What was the first energy source people used? What is the most used energy source today?

Can you imagine life without electricity? How about life without oil and gas?

From the first days that humans walked the earth, we depended on different energy sources for survival. The sun kept us warm and provided light during the day. As time went on, people developed new and increasingly sophisticated energy sources. Today, most of our energy needs are met by hydrocarbons: oil, natural gas, and coal.

What is the energy of the future?

Nobody can predict the future, but most people agree that energy will be supplied by a combination of renewable and non-renewable energy sources. Scientists and engineers are working to devise cleaner, more efficient uses of hydrocarbons. At the same time, people are working to develop cost-effective renewable energy sources.

Learn More

To learn more about the history of energy, the use of hydrocarbons today, and the future use of energy, take a look at Energy 101: Overview of Energy.