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While propane gas is heavier than air, natural gas is lighter.

When cooled to -260 degrees F, natural gas becomes a liquid.

The natural gas dug out of the earth today was formed about 100 million years ago.

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Oil is measured in barrels, which is equal to 42 US gallons or 159 liters.

The US has the 10th largest oil reserve in the world. ...

The US consumes more oil than any other country -- 1.85 billion barrels per day.

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The methane gas from cow manure can be used to create energy.

Most of the gasoline sold in the United States contains some ethanol.

Garbage is burned for energy as well.

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The origin of fossil fuel. ...

Products made from fossil fuels are versatile. ...

Fossils fuels are used in plastics. ...

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Coal Facts

Coal is made largely of carbon but also features other elements such as hydrogen, oxygen, sulfur and nitrogen.

Coal starts off as plant matter at the bottom of water.

Different types of coal contain different amounts of carbon.

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1.Geothermal energy comes from the heat in the Earth's core.
2.This heat creates underground reservoirs of steam and hot water, which can be tapped to generate electricity or to heat and cool buildings directly.
3. Geothermal energy is the third largest source of renewable energy, behind hydropower and biomass.

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1.Hydroelectric power is the most commonly used renewable energy source
2.The oldest hydroelectric plant is Cragside in Rothbury , England
3.The largest hydroelectric plant is La Grande in Quebec , Canada

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1. Windmills have been in use since 2000 BC
2. The first Modern Wind turbine was built in 1940's in Vermont, USA
3.The Largest Wind turbine in the world is in Hawaii, USA

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Nuclear Facts
1.Nuclear is one of the most reliable U.S energy sources
2.94 reactors currently operate in 28 U.S states
3. Nuclear Fuel is Extremely energy dense- 1 uranium Pellet is 1 inch tall

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Solar Facts
1.Solar Panels costs have fallen 99% since 1977
2.Solar Energy is Cheaper than Fossil Fuels
3.Solar Power plants can last 40 years or more