Time for the games to begin. Thank goodness.

To put it mildly, this has not been the most carefree of lead-ups to the Olympics. It has been roiled by security concerns, arguments about gay rights and the still-questionable hosting abilities of a country that spent $50 billion but remained busy slapping paint on buildings only hours before the cauldron was set to be lit.

After nearly two decades of study, the Food and Drug Administration announced rules Thursday designed to make sure that infant formula is safe and nutritious.

Most formula makers already abide by the practices, but the FDA now will have rules on the books that ensure formula manufacturers test their products for salmonella and other pathogens before distribution. The rules also require formula companies to prove to the FDA that they are including specific nutrients — proteins, carbohydrates, fats, vitamins and minerals — in their products.

Just as heart attack symptoms may differ between men and women, so do stroke risks.

Now, the American Heart Association has issued its first guidelines for preventing strokes in women. They focus on birth control, pregnancy, depression and other risk factors that women face uniquely or more frequently than men do.

New Internet restrictions approved by parliament are raising concerns the government is trying to control the flow of information amid a corruption scandal, and a senior European official on Thursday called the measures "a step back" for media freedom.

Under the legislation approved Wednesday, the country's telecommunications authority would be allowed to block websites or remove content that is deemed to be in violation of privacy without seeking court approval. Internet providers would also be forced to keep data on peoples' online activities and make them available to authorities when requested.

A free smartphone application has encouraged more than 70,000 Argentines to become citizen-cops as they shop.

Argentina's government blames escalating inflation on speculators and greedy businesses, and has pressured leading supermarket chains to keep selling more than 80 key products at fixed prices. President Cristina Fernandez wants citizens to report any overpriced items to the consumer protection agency.

Police in Cambodia said Friday they have recovered a precious golden urn stolen last year that contains what are considered to be remnants of Buddha's body.

The urn was taken from a mountain shrine 40 kilometers (25 miles) outside the capital in mid-December.

Jay Leno has said goodbye to "The Tonight Show" before, but not like this. The comedian became tearful and choked up Thursday as he concluded what he called the "greatest 22 years of my life."

"I am the luckiest guy in the world. This is tricky," said the emotional Leno, stepping down for the second and presumably last time as host of TV's venerable late-night program. Jimmy Fallon takes over "Tonight" in New York on Feb. 17.

Los Angeles County sheriff's investigators have presented evidence to prosecutors for a possible felony vandalism case against Justin Bieber.

The pop star has been under investigation since eggs were thrown at his neighbor's home last month, resulting in thousands of dollars in damage.

While filmmaker Woody Allen deals with a scandal in New York, fans are celebrating him in Buenos Aires, Argentina.

"We love Woody so much" is a new exhibit of paintings, drawings, photos and videos that celebrate Allen's comedic talent and tormented characters.

Spain coach Vicente del Bosque is not pleased by the actions of some national team players during an ill-tempered Copa del Rey semifinal between Real Madrid and Atletico Madrid.

Madrid beat Atletico 3-0 in the first-leg semifinal on Wednesday when Madrid players Alvaro Arbeloa and Sergio Ramos were among those to clash with Atletico striker Diego Costa, a Brazilian-born, naturalized Spaniard who is expected to be at the World Cup for Spain.