One way of delivering this is to allow countries to trade emissions permits among themselves.
Under Rex Tillerson, the current boss, policy changed to support for a carbon tax, a proposal so much more radical than the cap-and-trade emissions bills on offer that critics suspected it of being an intentional distraction.
The system would set a price for greenhouse gas emissions, such as carbon dioxide, and polluters would obtain and trade credits for emissions over a set threshold.
The global carbon market trades emissions via cap-and-trade schemes and credits that offset reductions in carbon emissions.
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Another approach to putting a price on carbon dioxide emissions is a cap and trade program.
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He still favours an unpopular cap-and-trade scheme for emissions (like Mr Obama), but this month courted carmakers by supporting low-interest government loans to them.
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There are two basic ways to deal with emissions: a cap and trade system or a carbon tax (any others, like regulation, are simply too stupid for words).
While most economists say a tax on carbon emissions is the best way to curb greenhouse gases, the proposed "cap-and-trade" programs that would cap emissions and provide emitters with tradable (and sellable) carbon allowances is likely to curry the most favor with lawmakers and industry.
In 2006 emissions in EU countries participating in the cap-and-trade program went up while U.S. emissions went down.
Most economists figure a tax is a simpler and more-straightforward way to reduce carbon emissions than cap-and-trade.
Mr Dion has agreed to drop his unpopular carbon tax (he now backs a cap-and-trade system for carbon emissions).
In 2008 another piece of major legislation was introduced: the Lieberman-Warner bill, which would implement a nationwide cap-and-trade program on carbon emissions.
Both Mr McCain and Mr Obama support a form of cap-and-trade to limit carbon emissions using market mechanisms (this would probably put up prices, though it should reduce pollution).
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Several causes dear to Democratic hearts, such as a cap-and-trade system for carbon emissions, could be blocked by Mr Bush unless he has an incentive not to do so.
The rapid decline in U.S. emissions has taken some pressure off the White House after the 2010 failure of a cap-and-trade bill meant to put a price on carbon emissions.
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Obama's big initiative will be some sort of cap-and-trade scheme for carbon dioxide emissions.
The European Union, which already restricts greenhouse-gas emissions through a cap-and-trade scheme, unveiled further incentives for CCS last year.
At its annual meeting in Kuala Lumpur this week, the trade group pledged to cap emissions from aviation in 2020.
Another spur for demand could be the global warming issue, namely the adoption of a cap-and-trade regime to contain carbon emissions.
Many California businesses have argued that forcing reductions in carbon emissions through a cap-and-trade platform will cause industry to move out-of-state.
Europe adopted a cap-and-trade system to cut its emissions under Kyoto only because America was plugging the idea before it pulled out.
He digs up a quote from when Romney was governor of Massachusetts, and signed on to a regional cap-and-trade plan to reduce carbon emissions.
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Just days after the American election, the Canadian prime minister proposed a continental cap-and-trade system to control carbon emissions something the oil industry in Canada adamantly opposed.
This would make it much easier for Mr Obama to pass his two big domestic proposals: heath-care reform and a cap-and-trade system for curbing carbon emissions.
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Meanwhile, Governor Romney once supported a cap-and-trade mechanism to control carbon emissions but as the 2008 presidential race neared, he backed off and favored modest penalties for coal-fired power plants.
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Obama talks about energy in most of his speeches, but, in contrast with 2009, when the centerpiece of his program was a cap-and-trade approach to reducing carbon emissions, his goal today is unclear.
Richardson also proposes the implementation of a market-based cap and trade system for greenhouse gas emissions in order to create incentives for the electric and industrial sectors to make significant reductions in their carbon emissions.
The bill being proposed would reduce nationwide greenhouse gas emissions 17 percent by 2020 and 83 percent by 2050 through a so-called "cap-and-trade" program under which companies would buy and sell emissions credits.
Obama's plans to finance an ambitious clean energy agenda by imposing a de facto carbon-emissions tax in the form of an auction-based cap-and-trade system has set the stage for an epic showdown on Capitol Hill over carbon emissions and energy legislation.
One of the most damaging proposals is a cap-and-trade system to limit greenhouse gas emissions.
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