That's 20% of Motorola Mobility workforce; third of offices closing
                                
                                
                                    (Newser) -
                                    After acquiring Motorola Mobility for $12.5 billion this year, Google is slicing off a fifth of its workforce, laying off 4,000 workers, the company has confirmed. Two-thirds of the 4,000 cuts will occur outside the US; Google is also shutting down up to a third of the...