Jamaican sprint star Usain Bolt has vowed to push himself to the limit during Sunday's 150m exhibition event on Rio's Copabacana beach.
Retailers in China have withdrawn a foreign brand of infant milk formula from shelves following a media scare over its safety.
Chinese President Xi Jinping concluded his South Africa trip and left Durban for Brazzaville Friday for a state visit to the Republic of the Congo.
Xi charts fresh era for Africa relations
Xi attends meeting with African leaders
Xi stresses China-India co-development
Comment: On the road to cooperationSpecial
Competitors play polo during a beach equestrian festival kicked off on Wednesday in Sanya, South China's island province of Hainan, March 28, 2013.
President Barack Obama attempted on Thursday to inject fresh momentum into efforts to pass gun-control legislation.
The Beijing municipal government has put the environment at the top of its work agenda this year, launching a campaign to tackle pollution, especially in the suburbs.
The Chinese middle class — the main driving force behind national consumption — is growing rapidly and investing in many areas of the economy, not just property.
Making his first research tour since becoming premier, Li Keqiang highlighted agricultural modernization, describing it as a main engine to drive development.
Folk artists give performance to mark the 54th anniversary of the abolishment of Tibet's feudal serfdom in Lhasa, capital of southwest China's Tibet Autonomous Region, March 28, 2013.
Chinese President Xi Jinping said here Wednesday that the world needs the common development of China and India and can provide sufficient room for the two neighbors' development.
The Chicago Bulls stopped the second-longest win streak in American professional sports history, beating the Heat 101-97 on Wednesday at a raucous United Center.
A Range Rover Sport from Land Rover is displayed on stage after an unveiling at the New York International Auto Show in New York, March 27, 2013.