State officials are inspecting what's left of a southwestern Kentucky bridge that collapsed after a cargo ship carrying aviation parts struck it.

Novak Djokovic overcame his breathing problems and a "physical crisis" to beat Andy Murray in an almost five-hour Australian Open semifinal Friday night and move into his third straight Grand Slam final.

The nation?s on-and-off economic recovery has picked up its pace, the Commerce Department reported Friday, with the U.S. economy growing at an annualized rate of 2.8 percent for the end of 2011.

That rate is the fastest recorded in a year and a half, and it follows three quarters of growth below 2 percent.

With the economy at the core of the presidential campaign, Newt Gingrich has received help from a group of relatively unknown economic thinkers ? including two former advisers to Herman Cain ? who share an unwavering faith in the school of thought known as ?supply-side economics? that rose to prominence more than three decades ago.

Ron Paul, well known as a physician, congressman and libertarian , has also been a businessman who pursued a marketing strategy that included publishing provocative, racially charged newsletters to make money and spread his ideas, according to three people with direct knowledge of Paul?s businesses.

The National Park Service said Friday that it will begin enforcing its long-standing regulation prohibiting camping on federal parkland at the Occupy sites at McPherson Square and Freedom Plaza at noon Monday.

Some Twitter users say they will stop using the service on Saturday in protest of the company?s new rule that allows for content to be blocked in specific countries.

The policy, announced Thursday, on the company?s blog will enable the company to block specific tweets on a country-by-country basis when the content runs afoul of local laws.

AURORA, Colo. ? President Obama?s raw exchange with the governor of Arizona on an airport tarmac this week did more than overshadow his carefully stage-managed road trip to trumpet his State of the Union goals.

AP - The television academy's Emmy has her wings. The motion picture academy's Oscar has his sword. But the Screen Actors Guild's statuette, known as "The Actor," may have the hottest bod of the Hollywood award season.

AP - Demi Moore smoked something before she was rushed to the hospital on Monday night and was "semi-conscious, barely," according to a caller on a 911 recording released Friday by Los Angeles fire officials.

AP - The million-dollar question at the Sundance Film Festival, home of low-budget stories shot on begged and borrowed cash, is this: What would you do if you had $1 billion to make your movie?

AP - British actress Kate Winslet is to receive an honorary award next month from organizers of the French equivalent of the Academy Awards.

Msnbc.com's political cartoonists take a look back at the past week.

This blog is not dead.

Science editor Alan Boyle's blog: Scientists with NASA?s Kepler planet-hunting mission announce the discovery of 26 distant worlds, nearly doubling the mission?s haul so far.

A United States Marine takes a ride on a giant slingshot and has a priceless reaction when he?s launched. Willie Geist has the video.