Historic time capsule found at Washington Monument. Before you go, we thought you'd like these... BALTIMORE (WBAL) -A piece of history has been discovered in Baltimore. The original cornerstone of the Washington Monument in Baltimore, thought to be long lost, was discovered last week while crews dug for a sewage tank.
We divide our energy use among four economic sectors: residential, commercial, transportation, and industrial. Heating and cooling our homes, lighting office buildings, driving cars and moving freight, and manufacturing the products we rely on in our daily lives are all functions that require energy.
Learn more about energy from solar, wind, water, geothermal and biomass. Learn more about how we use nuclear energy. Learn more about how we use electricity as an energy source. Learn more about our fossil energy sources: coal, oil and natural gas.