Is San Diego the new Hollywood?

Sylvester Stallone says so, and Arnold Schwarzenegger agrees.

Jamie Foxx and Samuel L. Jackson addressed the racially charged case of slain teenager Trayvon Martin at Comic-Con in San Diego.

Foxx was at the massive pop culture convention to promote his role as the villain Electro in "The Amazing Spider-Man 2."

Police were investigating a scuffle Friday between rapper Kanye West and a cameraman at Los Angeles International Airport, where paparazzi have been known to spend time in hopes of snapping shots of celebrities.

Numerous witnesses were interviewed about the afternoon incident to compile a report for detectives to investigate, LAX Police Sgt. Steve Savala said.

Smile Earth! You're on camera.

NASA is inviting the public to look skyward and wave at Saturn and Mercury in what is billed as an interplanetary photo op.

After a quarter-century of searching, scientists have nailed down how one particularly rare subatomic particle decays into something else — a discovery that adds certainty to our thinking about how the universe began and keeps running.

The world's top particle physics lab said Friday it had measured the decay time of a particle known as a Bs (B sub s) meson into two other fundamental particles called muons, which are much heavier than but similar to electrons. It was observed as part of the reams of data coming from CERN's $10 billion Large Hadron Collider, the world's largest atom smasher, on the Swiss-French border near Geneva.

A landmark federal study on hydraulic fracturing, or fracking, shows no evidence that chemicals from the natural gas drilling process moved up to contaminate drinking water aquifers at a western Pennsylvania drilling site, the Department of Energy told The Associated Press.

After a year of monitoring, the researchers found that the chemical-laced fluids used to free gas trapped deep below the surface stayed thousands of feet (1,000 feet equals 300 meters) below the shallower areas that supply drinking water, geologist Richard Hammack said.

Hundreds of supporters greeted the charismatic Russian opposition leader Alexei Navalny as he returned to Moscow on Saturday after his surprise release from jail and vowed to push forward with his campaign to become mayor of the Russian capital.

Navalny was sentenced to five years in prison on an embezzlement conviction on Thursday in the city of Kirov, but prosecutors unexpectedly asked for his release the next morning. They said that keeping him behind bars during the appeals process of his conviction would deprive him of his right to run for office.

Portuguese rider Rui Costa won the mountainous 19th stage of the Tour de France with a solo breakaway on the final climb, while race leader Chris Froome was still descending to the finish.

Costa secured his second stage win of the race after catching Frenchman Pierre Roland about a quarter of the way up Friday's fourth and final major ascent of Col de la Croix Fry.

Fans will pay a standard $90 for tickets to see World Cup matches in Brazil next year, $10 more than in 2010 in South Africa.

Announcing ticket rates Friday, FIFA said $15 seats will be available to Brazilian students, people over 60 and members of social programs. In 2010, South African residents could pay $20.

Italian World Cup-winning defender Gianluca Zambrotta has joined Chiasso in the Swiss League second division.

Chiasso announced in a statement that the 36-year-old Zambrotta has signed a one-year contract and will also work as an assistant coach.