North America
Fed's latest invention holds promise for controlled rate rise
The Federal Reserve's latest market proposal could help it smoothly raise interest rates and bring far more banks into direct contact with the U.S. central bank in a way that another tool, unveiled last year, could not.
U.S. Black Friday shopping marked by thinner crowds, protests
Mall crowds were relatively thin on Black Friday in a sign of what has become the new normal in U.S. holiday shopping: the mad rush is happening the night of Thanksgiving and more consumers are picking up deals online.
As energy shares tumble, opportunity lurks
Shale stocks have been hard-hit as investors see margins all but evaporating following the slide in crude oil prices, but the U.S. shale energy boom is not over.
Twitter to start tracking users' mobile apps
Twitter Inc will begin tracking what third-party apps are installed on users' mobile devices so the social media company can deliver more tailored content, including ads, the company said late on Wednesday.