Mexican paleontologists say they have uncovered 50 vertebrae believed to be a full dinosaur tail in the northern desert of Coahuila state.

The National Institute of Anthropology and History says the tail is about 15 feet (5 meters) long and resembles that of a hadrosaur or crested duckbill dinosaur.

The famed dabbawalas of Mumbai are celebrating the birth of the Duke and Duchess of Cambridge's baby with the Indian tradition of passing out sweets.

Thousands of dabbawalas each day pick up lunches at workers' homes and deliver the lunches to them at their offices. They have been hailed for their efficiency and Prince Charles visited them a decade ago, creating a connection with the men.

Britain's Prince William and his wife Kate gave the world its first glimpse of their newborn baby son on Tuesday, cradling the future king in their arms as they left hospital to go home.

The Duchess of Cambridge told the massed international media that it had been a "very emotional" experience, while the duke said that they were still working on a name for the third-in-line to the throne.

Real Madrid president Florentino Perez said Cristiano Ronaldo will end his career with the Spanish giants and has denied receiving any bids for the Portugal forward.

Manchester United fans long for the return of Ronaldo, whom the English club sold to Madrid for a record 80 million pounds (then $131 million) in 2009.

Barcelona reached an agreement Tuesday to sign Gerardo Martino as coach for two seasons, replacing Tito Vilanova.

Barcelona said it will specify plans for the Argentine's arrival in Barcelona "in the coming hours." Martino is expected to travel from Argentina to sign a contract and be presented officially to the club.

Congress is considering a new series of hard-hitting Iran sanctions on everything from mining and construction to the Islamic republic's already besieged oil industry, despite concern from the Obama administration that the measures could interfere with nuclear negotiations.

House and Senate bills are both advancing at a time President Barack Obama's national security team is gauging whether Iranian President-elect Hasan Rouhani is serious about halting some elements of Tehran's uranium enrichment activity. Those involved in the process said the administration wants to temper Congressional plans until Rouhani takes office in August and has an opportunity to demonstrate whether his government will offer concessions.

Two-time world champion Casey Stoner will test ride with his former Honda team in Japan next week, fueling speculation he is considering a return to MotoGP.

Stoner will join Honda for a two-day test at the Motegi circuit aboard team's world championship-winning RC213V bike. He will have further sessions on August 6 and 7.

Novak Djokovic attributes his success in recent years to a change of diet. Now he'll be sharing his nutrition tips in a book to be released before the U.S. Open.

"Serve to Win" is the title of Djokovic's "nutrition-based performance guide" that is to be published next month.

Australian rider Stuart O'Grady has announced his retirement, one day after completing a record-equaling 17th Tour de France.

The 39-year-old O'Grady called time on a 19-year professional career after a strong performance by his Orica GreenEDGE team in this year's Tour. Teammate Simon Gerrans won the third stage and O'Grady stood on the podium when the Australian-based outfit won the team time-trial in the fourth stage.

Olympic champion Oussama Mellouli of Tunisia got stuck trading elbows and kicks with a French challenger.

Five-time world champion Thomas Lurz of Germany had to waste precious energy fighting off herds of competitors just to get around the buoys lining the course.