Like Batman responding to a beaming Bat signal in the sky, fans are streaming to San Diego for the 45th annual Comic-Con pop culture extravaganza.

The four-day festival celebrating film, TV, video games, comic books, costumes and other popular arts kicks off with a preview Wednesday night and goes full force Thursday at the San Diego Convention Center.

So let's start with the enticing premise of Luc Besson's "Lucy," starring Scarlett Johansson: Human beings only use 10 percent of their brain capacity. Imagine what it would be like if we could access all of it?

Well, wow. It would be sort of like ... nothing new. Because, it turns out, in real life, humans pretty much DO use their whole brains.

Facebook and most other social networks are built on the premise that just about everything should be shared —except the money those posts produce.

At least two services are trying to change that. Bubblews, a social network that came out of out of an extended test phase last week, pays users for posts that attract traffic and advertisers. Another company, Bonzo Me, has been doing something similar since early July.

Peaches Geldof, daughter of Live Aid founder Bob Geldof, was a heroin addict who died from a drug overdose, a coroner ruled on Wednesday.

Her husband told a hearing that the 25-year-old TV presenter had started taking the drug again in February this year, having given it up three months earlier.

The "Colbert Bump" is becoming contagious.

Edan Lepucki, whose novel "California" became a best-seller thanks to a plug from Stephen Colbert, has in turn helped another book catch on.

Gay actors shouldn't have a monopoly on gay roles, award-winning stage and screen actor Nathan Lane said.

Lane, who is gay and has played both straight and gay characters, was asked the question at a TV critics' meeting Tuesday. He was there to discuss PBS' presentation of the Broadway play "The Nance," in which he stars.

Experimentation with human growth hormones by America's teens more than doubled in the past year, as more young people looked to drugs to boost their athletic performance and improve their looks, according to a new, large-scale national survey.

In a confidential 2013 survey of 3,705 high school students, being released Wednesday by the Partnership for Drug-Free Kids, 11 percent reported using synthetic HGH at least once — up from about 5 percent in the four preceding annual surveys. Teen use of steroids increased from 5 percent to 7 percent over the same period, the survey found.

There is more good news about HIV treatment pills used to prevent infection in people at high risk of getting the AIDS virus: Follow-up from a landmark study that proved the drug works now shows that it does not encourage risky sex and is effective even if people skip some doses.

The research was discussed Tuesday at the International AIDS Conference in Melbourne, Australia, and was published by the British journal Lancet Infectious Diseases.

Police are searching for four or five people they believe scaled to the top of the Brooklyn Bridge's two towers in the dead of night, disabled lights illuminating two large American flags and then replaced the flags with bleached-white ones.

The security breach at one of the city's most secured landmarks didn't appear to be the work of terrorists or even a political statement, said the police department's deputy commissioner for counter terrorism and intelligence, but was likely done by people familiar with climbing or bridgework who may even have scaled the bridge before.

Liverpool manager Brendan Rodgers says the team is moving on after Luis Suarez' departure to Barcelona for a $130 million transfer fee.

"He gave everything for Liverpool," Rodgers said Tuesday when asked if Suarez had let the club down. "Of course there have been issues, but they're in the past. He was a brilliant player for us and for me. ... It's a shame he's not here. But Liverpool, as a club, is bigger than any one player."