By Alexei Oreskovic. SAN FRANCISCO | Tue May 21, 2013 12:19am EDT. SAN FRANCISCO (Reuters) - Yahoo Inc Chief Executive Marissa Mayer's $1.1 billion acquisition of blogging service Tumblr will be a test of her ability to revive the aging Web portal.

The committee, which is made up of senior politicians, on Monday argued that Apple's complex structure includes three Irish-based subsidiaries that appear not be a tax resident anywhere in the world.

The Indian chief executive of outsourcing firm iGATE, Phaneesh Murthy, has been sacked "for not disclosing a relationship with a subordinate".

As 787 Dreamliner commercial flights resume after a lengthy grounding for battery problems, Boeing Co. and its customers are refocusing on fixing the host of other technical and mechanical issues that affect the reliability of the cutting-edge aircraft.

Fannie Mae and Freddie Mac (FMCC) are exempt from Michigan's state and local real estate transfer taxes, a U.S. appeals court ruled, overturning a lower-court decision.

GrubHub Inc. and Seamless North America LLC, two of the top food-delivery websites in the U.S., have agreed to combine their companies to take on rivals in the growing market for online meal orders.

Japan's Topix Index (TPX) extended a 4 1/2-year high as steelmakers rallied and GS Yuasa Corp. (6674) jumped after Dreamliner flights resumed in the U.S.

Federal Reserve Bank of Chicago President Charles Evans said the U.S. economy has improved �quite a lot� as the central bank maintains record stimulus and expressed confidence policy makers have tools needed to monitor markets for excesses.

Elon Musk, Tesla Motors Inc. (TSLA)'s chief executive officer and co-founder, said in a Twitter post the electric-car maker will �probably� repay its Energy Department loan as early as tomorrow.

But cities still have a bigger percentage, according to the Brookings Institution. The poverty shift has left many social service agencies unprepared.