Further improvement is needed in energy efficiency and reducing carbon dioxide emissions per unit of GDP, with carbon taxation preferable to emissions trading.
Natural gas emits about half as much carbon dioxide per unit of energy as coal.
Hu has pledged to reduce carbon intensity, or the amount of carbon emitted per unit of economic output.
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But there's no denying that burning natural gas (methane, that is) produces less carbon dioxide per unit of energy than burning coal.
But since then China has restated its commitment to achieving a 40-45% reduction in carbon emissions per unit of GDP by 2020 compared with 2005.
It was a particularly foolish idea for an economy that, thanks to decades of high oil prices and strict regulation, already boasts manufacturers that are among the most efficient in the world in carbon emissions per unit of production.
When anticipated supply is sufficiently high, gas undercuts coal as the fuel of choice for electrical generation, which results in reduced carbon dioxide emissions, as natural gas produces only about 50% to 70% of the carbon dioxide per unit output (depending upon your metric) that coal does.
It produces less carbon dioxide for a unit of energy than coal or oil, so the climate will benefit to the degree that gas replaces either of those: it will mostly substitute for coal, though some oil too, especially if gas-powered trucking becomes widespread.
Gas emits about half as much carbon dioxide as coal per unit of energy produced.
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The board's turntable unit has a carbon fibre finish and integrated RGB controlled LED lighting system in order to bring additional style and complete customisation to the table - a design which has quickly become a focal point of the festival following recent pictures being leaked via Twitter.
It is also saying that carbon trading is more "flexible" than unit-by-unit command and control.
Also, burning wood releases three times more carbon into the atmosphere than burning natural gas, per unit energy generated, said Booth.
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Moreover, Beijing says it plans to reduce carbon dioxide emissions by as much as 45% per unit of GDP by 2020.
Each allowance corresponds to one unit of emissions (e.g. one tonne of carbon dioxide equivalent).
The carbon dioxide intensity of U.S. energy supply (CO2 per unit of energy) in 2009 also dropped as a result of lower natural gas prices relative to coal.
The IEA uses a complex calculation called the carbon intensity index to show how much CO2 is emitted to provide a given unit of energy.
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By roughly 2008, carbon microfilament capacitive storage devices were able to match the amount of energy stored per unit volume and per unit weight that chemical batteries were capable of.
If more countries introduce contracts for carbon-emission quotas compatible with those traded in the EU (which use a unit called the European Union Allowance), the result could be a single worldwide market one day.
The premium isn't actually that great - it costs just under 11p a unit - and this one small act will contribute more to reducing the carbon emissions of my home than anything else I have done this month.
Clearly, though, the Bloom Box is still not a zero emissions tech and would only cut emissions by roughly 50% relative to the national average, unless it runs on landfill gas or biogas or hydrogen from electrolysis fueled by zero-carbon electricity (which would be much more expensive as you have to add cost of electrolysis unit, higher cost electricity, and about 30% conversion losses in electrolysis).
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