There are, of course, unsettled problems.
The focus of this article is on some important, unsettled problems of the commons.
In addition to the unsettled problems the chief obstacle remains unsolved: disarming the Irish Republican Army.
Accordingly, unsettled problems in catalysis are caused by our lack of knowledge about the dynamics of elementary processes.
It turns out that the original issue in 1911 featured an article by Professor Katharine Coman of Wellesley College entitled "Some Unsettled Problems of Irrigation", and in the anniversary issue, Robert Stavins (via Mark Thoma) cleverly decides to retrace what's happened since then with economic theory on "commons problems".
The paper considers an important and still unsettled paleogeographic problem of the Arctic Northeast of Asia: could Beringia have been covered with an ice sheet at the last glacial maximum? and what was the natural refrigerator impact on regional climate and paleo-oceanography of the Northern Pacific?
Dan Haverty of the American River Fire Department said the pilot informed departure control that he had a problem with "unsettled cargo". The plane was carrying automatic transmission fluid, clothing and small amounts of "detonating explosives," Haverty said.
The costs of having poor data can run into millions of dollars, caused by a range of problems from unsettled trades because of incomplete information to high-risk exposure due to inability to calculate firmwide risk management.
The refugee problem has particularly unsettled Turkey, which has received at least 78,000 registered Syrians, the most of any country, and has imposed a limit of 100,000.
And AIG's biggest problem - its unsettled disputes over the valuation of $62 billion worth of CDOs - was traceable to the reliance on AAA credit ratings of those CDOs.
