Facebook filed to go public this week, and many analysts expect that it will be valued between $75 billion and $100 billion on the day of its initial public offering. That would make Facebook more valuable than GM, Ford and even Goldman Sachs.

What's most remarkable is that the company has barely 3,000 employees, and many of them are about to become very, very rich.

On Feb. 5, fashion designer Jason Wu is launching a limited-edition line for Target. Wu became famous for designing Michelle Obama's inaugural gown. He's the latest high-end designer to partner with a mainstream retailer and offer his chic couture at cheap prices for the masses.

On a bitterly cold morning in Washington, D.C., last November, hundreds of fashionistas flooded the street in front of the low-priced fashion chain H&M. Italian luxury label Versace was launching a collection there, and customers were waiting for the doors to open.

Many addicts inherit a brain that has trouble just saying no to drugs.

A study in Science finds that cocaine addicts have abnormalities in areas of the brain involved in self-control. And these abnormalities appear to predate any drug abuse.

The study, done by a team at the University of Cambridge in the U.K., looked at 50 pairs of siblings. One member of each pair was a cocaine addict. The other had no history of drug abuse.

The Mona Lisa is one of the most enigmatic and iconic pieces of Western art. It has inspired countless copies, but one replica at the Madrid's Museo del Prado is generating its own buzz: conservators say that it was painted at the same time as the original — and possibly by one of the master's pupils, perhaps even a lover.

Losing a loved one in any circumstance can be a painful experience, but for some families in Chicago, that pain is being compounded by what's been happening at the Cook County morgue in recent weeks. In the words of one observer, it's "a moral travesty."