A new study of older American veterans finds they’re more than twice as likely to develop dementia if they suffered a traumatic brain injury (TBI) when they were younger.

Bikers are known to take over the streets and get "naked." But when will they be so common that we see them but don't think about them?

A grisly discovery of more than 400 mutilated bodies in Mexico is turning history on its head. Exploring the archeology of the site, the forensics of the bones and beautiful but grotesque codices that document the events, this program paints a new picture of the violent relations between the Aztecs and the conquistadors and rewrites much of what we thought we knew about the Aztec civilization.

Private companies are taking over near-earth space transport as NASA gets out of the Shuttle business. And New Mexico is building them an airport.

In "The Great Inca Rebellion," NOVA and National Geographic go to an impoverished suburb of Lima, Peru, where an ancient cemetery crammed with mummies is excavated by Peruvian archaeologist Guillermo Cock. In a truly startling find, he discovers corpses that differ from all the rest. They have been hastily buried and disfigured by multiple, appalling wounds and fractures. Forensic experts help to determine that these remains are victims of a battle that pitted club-wielding Inca warriors against Spanish cavalry.

San Diego police Detective Donna Williams and her daughter, Briana, were found dead in their Rancho Peñasquitos home. The detective's son is in custody.

Social studies textbooks in California public schools will soon be adding another piece of history - contributions of gays and lesbians.

On a recent expedition to the North Pacific Ocean UC San Diego researchers discovered plastic in nearly 10% of the fish they found. The Great Pacific Garbage Patch is to blame.

The La Jolla Playhouse scraps its scheduled premiere of "Finding Neverland" and adds the Des McAnuff directed "Jesus Christ Superstar."

A new book discovers the birth of rock 'n' roll in the black juke joints of the south, where artists like James Brown got their start. We'll talk with author Preston Lauterbach.

The military will not recognize same-sex marriages and couples will still be denied most of the benefits the Defense Department gives to heterosexual couples.

In the first of two stories on counterterrorism training, NPR reports on one training session that turned a state employee into a suspect.

Redevelopment can continue in San Diego, for a price. The city council will vote tonight whether to buy in to the state’s new redevelopment plan.