The national parks preceded the National Park Service, but the first great natural park was a state park. Californiaâs Yosemite State Park was established in 1864, by a federal cession approved by President Abraham Lincoln, and on October 21, 1880, President Rutherford B. Hayes toured Californiaâs Yosemite in an open carriage.
In fact, humans have been capturing the energy of moving water for thousands of years. Today, harnessing the power of moving water to generate electricity, known as hydroelectric power, is the largest source of emissions-free, renewable electricity in the United States and worldwide.
Types of Water Heater Power. A water heater may be powered by either electricity or natural gas. The latter kind of hot water heaters became very popular when their fuel supply cost quite a bit less than electricity. However, the price of natural gas has risen to the point where there is little significant difference.