Thomas Ewing, a spokesman for ETS, declined to comment on the investigation, but in a written statement called the security measures for tests taken in South Korea "among the most stringent of any country in which the SAT is administered, " adding that a security review for the country is under way.
WSJ: SAT Scandal Shines Harsh Light on South Korean Academics
The climate committee must decide by late 2011 the best way to put a price on greenhouse-gas emissions: an ETS, a carbon tax or a hybrid of both.
Mr Larson summarised the numbers game that a hunt for ETs necessarily entails.
As the New York Times chronicles here, a team of ETS auditors also showed up unannounced and found several breaches of protocol, including students sitting closer together than the minimum of four feet during the exam.
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On the first count, thanks to the economic malaise, the ETS is a success: its participants' emissions are well below the current cap.
EU-ETS also creates a costly administrative burden to operators, and the requirement that operators share sensitive personal data raises serious privacy and confidentiality concerns.
FORBES: Europe Stops The Clock On Deeply Flawed Aviation Emissions Scheme
The EU's Emissions Trading System (ETS) created a market in CO2 emission allowances, meaning that heavy emitters of CO2 have to buy allowances from enterprises that have managed to cut their CO2 emissions.
None of the research groups that have worked on developing these models has felt that it was important to include the much weaker effect of exposure to ETS, even though a number of them have assessed this association.
The trigger was Mr Rudd's decision in late April to defer a planned emissions-trading scheme (ETS) until at least 2013.
The other aspect of the US position that has drawn cries of "hypocrite" from the environmental community is that it asks the EU to stand down its ETS plan and instead develop a truly global measure to tackle aviation emissions.
The European Union's plans to introduce the Emissions Trading Scheme (ETS) have been met with a lot of opposition.
To explain why, here are some rough calculations that Andrew Charlton of Aviation Advocacy, a consultancy, has made about Ryanair's new ETS supplement of 25 euro-cents per passenger per flight.
Under the ETS, they are required to buy tradable permits for a gradually rising portion of their emissions: this year the EU will give the airlines permits to cover 85% of them.
First unveiled in 2005, EU-ETS requires aircraft operators flying within EU airspace to participate in a carbon credit trading program.
FORBES: Europe Stops The Clock On Deeply Flawed Aviation Emissions Scheme
Without some intervention to reduce supply, "the ETS will almost certainly collapse, " said Kash Burchett, a London-based analyst at consulting company IHS Energy.
Without the backloading plan to increase scarcity on the emissions permit market, "the ETS will almost certainly collapse, " said Kash Burchett, a London-based analyst at consulting company IHS Energy.
But he said the process of "due diligence", checking on ETS' references and financial strength, had failed to identify a string of press reports highlighting previous problems in the United States.
Matthew Gray of Jefferies, an investment bank, reckons that by 2020 the ETS will have an accumulated surplus of 845m permits, against a planned cap that year of 1.8 billion permits.
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