The sun powers our earth. People from knew that the morning sun brought energy to every living thing. We get most of it indirectly through the process called photosynthesis. Almost one hundred years after Thomas Edison imagined using the sun’s energy to power the world of electricity, technological innovations and human ingenuity are harnessing the power of the wind, water, and heat of the earth. Nature replenishes renewable energy sources throughout our lifetime; non-renewable sources are only depleted and take hundreds of thousands of years to rebuild. Non-renewable sources include petroleum, natural gas, coal and nuclear electric and tend to pollute the earth. Renewable energies include hydropower, biofuels, wood, wind and solar. While renewable resources make up only a small portion of United States Energy Production, organizations like Architecture2030 are working to utilize solar, wind, hydropower and other renewable energy sources to power half of the energy needs of growing urban life. Scientists, engineers, mathematicians and technologists all work to produce new forms of clean, renewable energy to power our lives. Currently, the largest renewable energy source for electricity generation in the United States is hydropower. Utilizing natural forces leads to power diversification, new jobs, energy savings and reduced greenhouse gas emissions.