S&P cuts Argentina's credit rating further as talks drag on 5:03pm EDT

- Standard & Poor's on Wednesday cut its credit rating on Argentina's foreign-currency sovereign debt to "selective default" even as talks between officials from Latin America's No. 3 economy and a group of holdout creditors continued in New York.

U.S. Federal Reserve Chair Janet Yellen testifies on the economy before the Joint Economic Committee on Capitol Hill in Washington May 7, 2014. REUTERS/Jonathan Ernst

Fed presses forward with bond buying

WASHINGTON - The Federal Reserve pressed ahead with its plan to wind down its bond-buying stimulus and upgraded its assessment of the U.S. economy, while reaffirming it is in no rush to raise interest rates.  Full Article 

A car drives past the remains of a spent ammunition on the suburbs of Donetsk July 29, 2014. REUTERS/Sergei Karpukhin

Moscow fights back after sanctions

MOSCOW/KIEV - Russia fought back over new U.S. and EU sanctions imposed over Ukraine, where fighting between Moscow-backed rebels and government troops has intensified.  Full Article 

Medical staff working with Medecins sans Frontieres (MSF) put on their protective gear before entering an isolation area at the MSF Ebola treatment centre in Kailahun July 20, 2014. REUTERS/Tommy Trenchard

Liberia shuts schools, quarantines communities

DAKAR - Liberia announced the quarantine of a number of communities and the closure of schools across the country in a bid to halt the worst Ebola outbreak on record.  Full Article 

U.S. President Barack Obama talks about the economy at the Uptown Theater in Kansas City, Missouri, July 30, 2014. REUTERS/Larry Downing

Obama to Republicans: 'Stop just hatin''

KANSAS CITY Mo - President Barack Obama took his criticism of congressional Republicans for confounding his agenda to a higher pitch, appealing to them to "stop just hatin' all the time."  Full Article 

A person holds a magnifying glass over a computer screen displaying Twitter logos, in this picture illustration taken in Skopje September 10, 2013.  REUTERS/Ognen Teofilovski

Twitter's surge revives valuation debate

The surge in Twitter's shares has revived debate about whether the stock warrants a valuation that is five times that of Facebook, its biggest rival in social media.  Full Article 

Yet more missiles rain down on Gaza as death toll nears 1,300

Emergency workers fought through smoke to find victims of an Israeli air strike on a day that saw the death toll in Gaza edge closer to 1,300. Deborah Gembara reports.

A miner covered in coal dust sits inside a mine in Choa Saidan Shah, in Pakistan's Punjab province, April 29, 2014. REUTERS/Sara Farid

Mining, curfews and couch potatoes

Baltimore preps for a curfew and a new study assesses how much TV-watching makes us happy. Heather Struck highlights coverage you may have missed.   Full Article