i'm nikki fox. thanks forjoining me at the queen elizabeth olympic park here in london ahead of the summer 2020 paralympic games. in this special edition of witness history, we're looking back at some important moments in the recent history of disability and sport. coming up: a medallist who competed at the first paralympic games. we'll hear about the special olympics for those with learning disabilities. away from sport, we'll find out why students at america's deaf only university shut down their campus. plus, we'll hear about the specially designed car for disabled people that was both terrifying and exhilarating. but first, when sports enthusiast van phillips lost his leg during an accident, he became immediately frustrated by the clumsy prosthetics on offer. determined to run again, he went on to invent the first carbon graphite prosthetic running leg in 1984.