This process of combining of water, cement paste, sand and rock creates an awful lot of CO2 gases - which are linked by some scientists to global warming - about five to 10% of the world's total emissions.
The ruling rejected a position taken by the EPA during the Bush-Cheney administration that CO2 greenhouse gases were not air pollutants.
That methane and CO2 are greenhouse gases for example.
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He says the Clean Air Act, which is designed to regulate traditional air pollutants, is the "wrong horse" for regulation of CO2 and other greenhouse gases.
But last year a UN report warned that HFCs are far more potent greenhouse gases than CO2 and so their use could hamper efforts to tackle climate change.
They could also be engineered to remove carbon dioxide (CO2) and other greenhouse gases from the atmosphere.
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Most involve cutting emissions not of CO2 but of more potent greenhouse gases.
The European Union, for example, wants to see industrial nations--its own members included--bring emissions of CO2 and other heat-trapping gases down to 85% of what they were in 1990, and do it within the next 12 years.
It was noted that we must substantially reduce our CO2 emissions, as ocean acidification is mainly caused by CO2, and that other greenhouse gases must also be limited as they all contribute to ocean warming and hence deoxygenation.
Many scientists blame increased emissions of greenhouse gases like carbon dioxide, or CO2.
Of the gases that warm our atmosphere, CO2 is a 4% gas in our atmosphere, Water in its various forms is about 94%.
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Atmospheric concentrations of CO2 equivalent (carbon dioxide and other greenhouse gases) reached 430 parts per million last year, compared with 280ppm before the industrial revolution.
Many scientists blame increased emissions of greenhouse gases such as carbon dioxide, or CO2.
It focuses on the biggest human source of greenhouse gases - emissions of carbon dioxide, or CO2, from power plants.
No matter who the next President is, utilities will likely have to start paying for their CO2 emissions-- whether via a tax on greenhouse gases (unlikely) or a cap-and-trade system.
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