Covering the business of education and training

Twenty five years ago prostitution was illegal in China.

Now there are an estimated 6-10 million women engaging in the world's oldest profession.

Laura Ling was a UCLA communications student. Now she runs Current - TV.

I came across this rather intense video clip - an interview with some Chinese sex workers, an encounter with China's mafia...and evidence that things are not always what they appear to be.

Well, maybe they are.

You will need about 15 minutes or so to watch the whole clip.

Be ready to think.