Facebook has announced its new "Graph Search" at its headquarters in San Francisco, California.
Its chief executive Mark Zuckerberg said the company's mission "is to make the world more open and connected", Engadget website reports.
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Police in the United States made the discovery after arresting a Brazilian man at an apartment in Massachusetts.
The family of a wealthy British man has claimed he was murdered by his Ukrainian bride in Kiev so she could inherit his fortune.
Medics and flight crew had been rescuing an injured skier when they crashed in the region of Abruzzo.