"How can the oil industry need a dollar in the days of $100 crude oil?" says John Berger, CEO of Standard Renewable Energy.

对此，标准可再生能源(Standard Renewable Energy)的首席执行官约翰•伯杰(John Berger)的看法是：“在原油价格达到每桶100美元的今天，石油工业会需要1美元吗？”

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Chemical energy, which is everything from wood to crude oil to gasoline to coal, consists of playing with the electrons, changing their energy state.

从木头、原油、汽油到煤炭，它们中释放出来的化学能量是通过改变其中电子的能量状态实现的。

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The oil-equivalent metric represents all forms of energy consumed, including crude oil, nuclear power, coal, natural gas and renewables sources such as hydropower.

油当量代表消费的所有形式的能源，其中包括原油、核电、煤炭、天然气以及水力发电等再生资源。

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Despite recent increases in the price of crude oil, energy prices are below last year's peak.

NPR: Bernanke: U.S. Growth 'Moderate' as Inflation Rises

Natural gas is a cleaner fuel than coal and crude oil and is becoming increasingly important with governments across the world encouraging the production and use of natural gas over coal and crude oil for energy generation.

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Biofuels made from algae can be produced in a way that make this energy source cost-competitive with crude oil by increasing the amount of energy algae stores as fat, according to early research from VG Energy, an alternative energy and agricultural biotech company.

FORBES: Biofuel From Algae Could Compete With Oil, Report Says