When, if ever, will we run out of oil and natural gas
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When, if ever, will we run out of oil and natural gas

[From: ] [author: ] [Date: 11-05-16] [Hit: ]
enough to last at least 155 years. But coal is a fossil fuel and a dirty energy source that will only add to global warming.The natural gas fields in Siberia, Alaska and the Middle East should last 20 years longer than the worlds oil reserves but, although cleaner than oil, natural gas is still a fossil fuel that emits pollutants.......
I'm writing an English essay about how we should use green energy. I really need help and this is very important because this is my summative. Please help! Thank you.

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Coal

There are still an estimated 909 billion tonnes of proven coal reserves worldwide, enough to last at least 155 years. But coal is a fossil fuel and a dirty energy source that will only add to global warming.

Natural gas

The natural gas fields in Siberia, Alaska and the Middle East should last 20 years longer than the world's oil reserves but, although cleaner than oil, natural gas is still a fossil fuel that emits pollutants. It is also expensive to extract and transport as it has to be liquefied.

Hydrogen fuel cells

Hydrogen fuel cells would provide us with a permanent, renewable, clean energy source as they combine hydrogen and oxygen chemically to produce electricity, water and heat. The difficulty, however, is that there isn't enough hydrogen to go round and the few clean ways of producing it are expensive.

Biofuels

Ethanol from corn and maize has become a popular alternative to oil. However, studies suggest ethanol production has a negative effect on energy investment and the environment because of the space required to grow what we need.

Renewable energy

Oil-dependent nations are turning to renewable energy sources such as hydroelectric, solar and wind power to provide an alternative to oil but the likelihood of renewable sources providing enough energy is slim.

Nuclear

Fears of the world's uranium supply running out have been allayed by improved reactors and the possibility of using thorium as a nuclear fuel. But an increase in the number of reactors across the globe would increase the chance of a disaster and the risk of dangerous substances getting into the hands of terrorists.

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Exxon has invested millions into this breakthrough on our oil supply. There is an algae that can secrete oil, and if we are able to harness the algae, we would be able to produce oil at our leisure.

This would in turn make it very unlikely that we'd run out of oil.
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