(Continued from page 42)

and share tidbits of our lives. It has even been credited with starting a revolution or two. The company, based in San Francisco, announced Thursday that it intends to sell stock to the public for the first time. Naturally, it did it via a tweet.
• Here are some quick facts about Twitter in 140 characters or less, the limit of tweets.
• -- MT (at)Twitter We've confidentially submitted an S-1 to the SEC for a planned IPO.
• -- (hash)FunFact: In the first hour of (at)Twitter sending that IPO announcement tweet, 7,872 people retweeted the message.
• ___

• LOS ALAMOS, N.M. (AP) -- At Los Alamos National Laboratory, a seven-year, $213 million upgrade to the security system that protects the lab's most sensitive nuclear bomb-making facilities doesn't work. Those same facilities, which sit atop a fault line, remain susceptible to collapse and dangerous radiation releases, despite millions more spent on improve

(Continued on page 44)