Nigeria's President Buhari appoints a committee to advise him on how best to tackle corruption and reform the legal system.

Google unveils a surprise restructuring, creating a new parent company called Alphabet Inc.

An outbreak of Legionnaires' disease in New York - largest in the city's history - leaves at least 12 people dead.

Japan has restarted its first nuclear reactor under new safety rules since all plants were shut down after the 2011 Fukushima disaster.

A state of emergency is in force in the US city of Ferguson amid protests marking the anniversary of the death of black teenager Michael Brown.

China's central bank devalues the yuan to its lowest rate against the US dollar in almost three years, calling it a "one-off" adjustment.

Australia is taking an emissions reduction target to an international meeting in Paris that is below that of the US and Canada.

Thailand's King Bhumibol Adulyadej is recovering from treated for hydrocephalus, an excessive build-up of fluid on the brain, say authorities.