According to an article at the BBC, an evolutionary theorist in London suggests that humanity may split into two sub-species within the next 100,000 years. From the article: 'The descendants of the genetic upper class would be tall, slim, healthy, attractive, intelligent, and creative and a far cry from the "underclass" humans who would have evolved into dim-witted, ugly, squat goblin-like creatures.'
Read the first comment. :^)
Update: Here's a link to the discussion. (Sorry about that!)
Here's a link to the BBC article.