Twitter co-founder Jack Dorsey is to return full time to lead product development, three years after he was pushed out of the company as chief executive.

Alain Robert, the French climber dubbed "Spiderman" for his feats, scales the world's tallest building, the Burj Khalifa in Dubai.

Barack Obama tells Americans the first war under his presidency is justified but US involvement in Libya will be limited.

The US Army apologises for distress caused after new images of US troops posing with the bodies of Afghan civilians are published in a magazine.

A website that illegally sold Beatles songs online for 25 cents each agrees to pay record companies almost $1m (£625,000) to settle a lawsuit.

Japanese PM vows to redouble efforts to tackle damage at a nuclear plant where radioactive water has leaked creating a "maximum alert".

Ratan Tata and Anil Ambani will appear before a parliamentary committee probing a multi-billion dollar telecom scandal.

Ricky Ponting resigns as Australia Test and one-day captain but says he wants to play on for the team, ahead of the tour of Bangladesh.