When Facebook goes public this week, the company will be valued at roughly $100 billion.
It will be the highest valuation ever for an initial public offering of a tech company. Is Facebook really worth this much money?
One way to frame the question is to consider a single fraction.
The number on top of the fraction is the total value of the company. The number on the bottom is the company's profits over the past year. This fraction is called the price-to-earnings ratio. It's widely used by investors in stocks.
Carlos Fuentes, one of the most prolific and best known Spanish-language authors, has died. His death was reported on Twitter by Mexican president Felipe Calderon. The Mexican daily Reforma, which Fuentes often wrote for, reports the author died after experiencing heart problems.
He was 83.
"I am profoundly sorry for the death our loved and admired Carlos Fuentes, writer and universal Mexican. Rest in peace," Calderon wrote on Twitter.
To be perfectly honest, I'm not sure I've ever walked in my sleep. There's a family story that I'd like to label fiction about a somnolent bathroom run that ended in a closet. But if it ever happened, I don't remember it.
Living in the middle of a natural gas boom can be pretty unsettling. The area around the town of Silt, Colo., used to be the kind of sleepy rural place where the tweet of birds was the most you would hear. Now it's hard to make out the birds because of the rumbling of natural gas drilling rigs.
The land here is steep cliffs and valleys. But bare splotches of earth called well pads are all over the place.
"That's the one I'm worried about because it just went in," says Tim Ray.