that it can be moved quickly to a site where additional computing power is needed, but the Blackbox is also highly energy efficient. Its equipment is designed to cool overheating machinery in a small space more efficiently than can occur in a giant warehouse.

"As far as I'm concerned, eco means both ecology and economics," Douglas says. That explains why he's just as enthusiastic about one of Sun's least technical efforts to reduce computing's environmental impacts. In 2002, the company instituted a massive telecommuting program. "If an employee is willing to give up a permanent office," Douglas says, "we purchase their home equipment and high-speed Internet service." Some 15,000 employees--46 percent of Sun's workforce--have signed on. "We've saved $65 million in office costs," he says, "and 30,000 tons ofMary Byrne voted out of 'X Factor' semi-final

Mary Byrne has just missed out on a place in The X Factor final after becoming the twelfth act eliminated from this year's competition.

The former supermarket worker chose to reprise her performance from the first live show, James Brown's 'It's A Man's Man's Man's World', in the hope that she could beat sing-off rival Cher Lloyd and her rendition of 'Everytime' by Britney Spears.

Following the showdown, both Louis Walsh and Cheryl Cole voted to save their respective acts, with Walsh stating that Byrne was "incredible... a real person living her dream", while the Girls Aloud star declared: "I backed [Lloyd] from the start and I will back her to the end."

Next, Dannii Minogue branded both acts as "great contestants" before explaining