California has led the country in enacting stricter air pollution and tailpipe emission standards.
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Among the questions are: can the Environmental Protection Agency regulate the emission of greenhouse gases?
Nissan's announcement of a new era for emission-free motoring continues to drive the electric revolution forward.
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TfL also said that IBM would also administer the low emission zone from November 2009.
This will place a harsh economic penalty on coal because of its emission number.
It will let dirty plants avoid fines by buying emission allowances from clean ones.
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In matters affecting the common good, the government gets involved, as with national emission standards.
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How efficient are the manufacturing processes from material use, energy consumption, emission and waste generation viewpoints?
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Natural gas-powered vehicles are already in existence, most notably powering city buses for low-emission public transportation.
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Poland says the EU's distribution of CO2 emission permits is unfair because it uses gas-based benchmarks.
It makes sense, but a lot will depend on how the city defines low emission.
Nissan said the Leaf hatchback would be the world's first affordable, mass-produced, zero-emission car.
The company has also experimented with positron emission tomography, or PET, machines, yet another billable service.
More mature offerings include rich library of emission factors and carbon allowances and credits management.
Europe's emissions are capped by an emission-trading scheme, but the costs will now rise for everybody.
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And CBO said half of the domestic offsets are actual emission reductions in uncovered sectors.
One example was a tax for not purchasing emission control equipment for a car.
Doctors can look for indications of the disease using positron emission tomography (PET) scans.
Going with older components also lowers power usage and heat emission, and boosts battery life.
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Because those electrons leave, other electrons fill in the gaps, causing the emission of X-rays.
They are more radioactive than is permissible for an emission from a nuclear plant.
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It is the kind of technology that could make possible the elusive emission-free power plant.
What you would see, says Fender, is emission in the x-ray, radio, infrared or optical.
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But how can anyone detect electromagnetic emission from a black hole if nothing escapes its gravity?
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How, exactly, should more stringent vehicle greenhouse emission standards contribute to producing more efficient truck engines?
As unelected state sinecures enact strict emission codes at coal burning plants, costs climb.
Carbon emission contributes to global warming and climate changes affecting our water supply and quality.
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Initially, Dr Zeki employed a scanning technique called positron-emission tomography to investigate these regions.
It is similar to what TfL did with the introduction of the Low Emission Zone.
One would allow countries to measure emission reductions or increases against a "forward-looking baseline".
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