The dollar hit a 12-1/2-year high against the yen on Thursday, as investors bet that U.S. interest rates will rise later this year.» Read More
The dollar was steady ahead of Janet Yellen's testimony in Congress, while Norway's crown jetted almost 1 percent higher.
The dollar see-sawed after a weaker-than-expected U.S. jobs report on Friday.
Eswar Prasad, Senior Professor of Trade Policy at Cornell University, says that there are no viable contenders to replace the greenback as the world's reserve currency.
Global currency markets trod water ahead of interest rate decisions in Britain and the euro zone on Thursday.
The yen gained on Wednesday, as struggles in stock markets and the emerging markets forced investors to seek safe-haven currencies.
The Australian dollar surged almost two percent on Tuesday after moves from the country's central bank dropped.
The euro was soft on Monday as investors thought it more likely the European Central Bank would have to ease policy to combat slowing inflation.
The euro fell as soft euro zone inflation data rekindled concerns the ECB may have to act to combat deflation, while the dollar gained.
The dollar rose against a basket of currencies on Thursday after data showed the US economy produced solid growth in the fourth quarter.
Several analysts see an upside for Russia to the emerging market rout, seeing it as "easy money" for the government's coffers.
The yen rose against the dollar, suggesting emergency action to stabilize Turkey would not be enough to quell nerves over emerging markets.
The dollar regained a firmer footing against the yen on Tuesday as investors took a breather from a sell-off of stocks and emerging market assets.
Safe-haven currencies like the yen and the Swiss franc were much in demand on Monday as an emerging markets sell-off continued.
John Rutledge, SAFANAD chief investment strategist, and Leland Miller, China Beige Book International president, share their thoughts on China's structural problems and whether the country is facing a banking crisis.
CNBC's Michelle Caruso-Cabrera takes a look back to see if growing currency concerns will likely be better or worse this time around.
Is a 'herd mentality" driving market lower? Marc Chandler, Brown Brothers Harriman, and Boris Schlossberg, BK Asset Management, discuss what's driving global currencies lower and its impact on emerging markets. A lot of it is psychologically driven, explains Schlossberg.
China's shadow banking troubles may be causing some general bearishness, reports CNBC's Michelle Caruso-Cabrera.
Fears of a default in China's shadow banking system sent markets lower, but there is now growing expectations that scenario will be avoided, reports CNBC's Eunice Yoon.
The yen, Swiss franc and euro charged higher amid worries about a China slowdown and turmoil in some emerging markets.
Sterling rose to an almost three-year high against the dollar on growing expectations that the BoE will raise interest rates sooner.