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California space-launch entrepreneur Elon Musk said Thursday his company will try to develop an orbital booster system with components capable of flying back to Earth for reuse.
An unmanned glider streaks over the Pacific Ocean at 20 times the speed of sound in a video released Thursday by a U.S. defense research agency experimenting with technology that could give the military the ability to strike any part of the globe within an hour.
Cold blasts of wind hit California on Wednesday in the trail of a storm that dumped more rain and snow on the soggy state but failed to trigger significant new mudflows.
The Pentagon and NASA experts have determined that a billowing contrail seen streaking into the skies above Southern California was likely caused by an airliner and not a missile.
Thunderstorms spit lightning and unleashed downpours across warm and humid Southern California on Friday, causing widespread power outages and injuring one man.
Southern California's heat wave has left tens of thousands of people without electricity.
Forecasters may never know just how hot it got in Los Angeles during a day of record-breaking heat: After the temperature soared to 113 degrees, the thermometer took the rest of the day off.
Forecasters may never know just how hot it got in Los Angeles during a day of record-breaking heat: After the temperature soared to 113 degrees, the thermometer took the rest of the day off.
Thousands of heat-related power outages are being reported in Southern California, where temperatures are soaring in a blistering fall heat wave.
Southern California's Metrolink system and Connex Railroad filed court papers Wednesday accepting the maximum $200 million in liability for a 2008 head-on collision between a commuter train and a freight that killed 25 people and injured more than 100.
A B-17 bomber that lay in a New Guinea swamp for decades after being forced down during a World War II combat mission has been returned to the United States after years of salvage efforts.
A 16-year-old sailor on a round-the-world journey was adrift in the frigid southern Indian Ocean on Friday as rescue boats headed toward her yacht, damaged by 30-foot waves that knocked out her communications and prompted her to set off a distress signal.
A 16-year-old Southern California girl attempting a solo sail around the world was feared in trouble Thursday thousands of miles from land in the frigid, heaving southern Indian Ocean after her emergency beacons began signaling and satellite phone communication was lost.
Instrument-laden aircraft and a research ship equipped to sniff the atmosphere and ocean have joined land-based monitoring stations in a huge field study of air pollution and climate change in California.
The future leader of the nation's most populous Roman Catholic archdiocese was welcomed Wednesday with standing ovations in a religious service marked by clear indications that support for immigrants will be a priority.
Federal officials say an air-taxi helicopter that crashed two years ago on Southern California's Santa Catalina Island probably went down because of a turbine blade fatigue fracture.
Motorists steadily fill up at BP's environmentally correct showcase gas station in Los Angeles even as the company's crude oil stains 2,000 square miles of water in the Gulf of Mexico.
A NASA Boeing 747 carrying a huge German-made infrared telescope is on the verge of scanning the skies for the first time after years of development.
Mojave Desert borate miners have rallied with hundreds of supporters outside the British Consulate in Los Angeles to protest a lockout by the mine's Anglo-Australian owner.
One of NASA's newest research jets soared high over the Pacific Ocean Tuesday on a 24-hour mission to study Earth's atmosphere.
After a decade of development, the Air Force this month plans to launch a robotic spacecraft resembling a small space shuttle to conduct technology tests in orbit and then glide home to a California runway.
The feared release of a convicted child molester from a California prison was thwarted Friday by 11th-hour federal charges involving child porn and a woman's allegations that he bought her as a child in Asia and subjected her to years of sexual abuse while molesting her young friends.
A letter carrier who is a registered sex offender has been reassigned after concerns were raised that he was delivering mail in a San Diego suburb with many children, a Postal Service spokeswoman said Wednesday.
Sandwiched into the same agenda as an old Southern Pacific railroad roundhouse and a 19th century raisin grape farm, Tranquility Base seemed way out of place for a California preservation panel to be considering Friday.
Hundreds of evacuees were allowed Friday to return to their foothill homes as Southern California's week of lightning, vicious downpours and tornadoes dissipated into occasional thunderstorms.
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