A friend of one of the San Bernardino attackers has been charged in connection with the mass shooting that killed 14.

Republican presidential candidates spar over national security issues and how best to counter the so-called Islamic State (IS) in the first debate since attacks in California and Paris.

President Barack Obama says the US "will not be terrorised" by Wednesday's mass shootings in San Bernardino, California.

The mass shooting in California is being investigated as "an act of terrorism," the FBI said, amid reports the female assailant had pledged allegiance to the Islamic State group on Facebook.

At least 14 people were killed in a shooting at a holiday party in California, triggering a massive manhunt which ended when police shot dead two heavily armed suspects -- a man and a woman -- on a quiet residential street.

Google playfully posts a photo of a motorcycle cop pulling over one of it self-driving cars for riding along at a cautious pace.

The Cassini probe is all set to make a daring close flyby of Enceladus, an ice-rich moon of Saturn.

The remains of a US soldier missing since the Korean War have been returned to his family in California.

California joins four other US states that allow terminally ill patients to legally end their lives with a doctor's supervision.

The life of a mountain lion can be stressful and monotonic.

The most stunning thing about Chile's Wednesday night's earthquake is probably the relatively low amount of havoc caused by such a powerful shake.

The US Navy agrees to limit its use of sonar that may inadvertently harm whales and dolphins in waters near Hawaii and California.

The governor of California declares a state of emergency after wildfires forced thousands of people to flee their homes in the north of the state.

Actor Johnny Depp jokes about killing his dogs and eating them during a press conference at the Venice Film Festival.

Swans beat their wings five times per second, and yet their heads stay remarkably still. How is this possible?

For the first time over a billion people used Facebook on a single day, according to company founder Mark Zuckerberg.

Music instrument is a must for those who intend to build career in music as profession because it attracts audience with the combination of sounds and voices.

Bangladeshi-American engineer Shah Talukder had definite reasons to feel proud when his daughter launched a language coaching programme for poor students back in his motherland four years ago. And he had reasons to be frustrated too when Leilah, in the US, had trouble communicating with her students in Bangladesh due to hartals, weather, or traffic jams.

Californians are about to get their water from a new source - the Pacific Ocean, as Governor Jerry Brown’s new plan to save the state is set to launch next year.

Police in northern California have launch a massive manhunt for a 'bold' would-be rapist who tried to attack a 13-year-old girl as she was opening her door to return home.