If you thought that the nation's electrical grid was designed to prevent a single, localized malfunction from triggering a blackout for millions of people, you'd be right.
But that didn't prevent that exact event from happening Thursday in San Diego, parts of Arizona, and Mexico's Baja peninsula. Phoenix-based Arizona Public Service Co. said the blackout started when a piece of monitoring equipment was removed at a substation in Yuma, along the border with Mexico.
Ten years ago Friday, a team of al-Qaida agents carried out an assassination that was the first step in their plan leading to the Sept. 11 attacks. In the north of Afghanistan, suicide bombers posing as journalists killed Ahmad Shah Massoud, the most famous leader of Afghan resistance against Taliban rule.
Today, posters of Massoud still adorn shops around northern Afghanistan, and admirers held a huge commemoration of him Friday near his home.
But 10 years after his death, Massoud's legacy has been overshadowed by a grueling war that grinds on with no end in sight.
New Mexico Gov. Susana Martinez has fought hard to repeal a law in her state that gives undocumented immigrants driver's licenses. But in an interview with KLUZ-TV, the Univision affiliate in Albuquerque, the Republican governor said her paternal grandparents came into the country illegally.
In the interview, she said her grandmother died when her father was about 1, but she knows they "arrived without documents."
Economists have been looking over the $447 billion job-creation package President Obama proposed to Congress Thursday night. Predictably, the reaction was mixed, with most economists giving it a thumbs up, and many conservatives turning thumbs down.
Here are a few of the economists' opinions that were blogged, tweeted, reported or emailed around.