As the 2012 Summer Paralympic Games reach day 7, an estimated 4,200 athletes representing 167 countries are now competing in London. Competitions have already taken place in cycling, sailing, track and field, swimming, archery, and many more. The Games, which continue until September 9, are designed for athletes with disabilities and feature 20 sports in all. Collected here is just a small glimpse of these inspirational "superhuman" athletes as they take part in the 2012 Summer Paralympics