Mobile messaging service WhatsApp is now used by a billion people every month, Facebook reports.

A former director of the Brazilian state-owned oil company Petrobras has been sentenced to 12 years in jail as part of a huge corruption probe.

EU data protection regulators are meeting to decide how to restrict data transfers in light of last year's Safe Harbour ruling.

Phones made by China's Xiaomi - the world's third biggest smartphone maker - are going on sale in the US for the first time.

Shares in the Clydesdale Bank will start trading on the London Stock Exchange on Tuesday, following an announcement of the offer price.

Stocks in Asia are trading largely lower on Tuesday following a lacklustre lead from the US overnight and as oil prices fall again.

Oil giant BP announces its full-year profits are down by more than half, but it maintains its dividend for the quarter.

Sainsbury's offers £1.3bn to win control of Argos owner Home Retail Group.