in the women's 100 meters, the showdown between brittany mason and venezuela's -- came down to a photoish. you can see how close the race was. a closer look showed -- venezuela crossing the line first to win gold in 11.97 seconds. wow. sports prosthetics. they have change the notion of mobility for people who have parts of their body amputated. one example of -- is a japanese illustrator who lost a leg 15 years ago. she has now joined a running club thanks to a new prosthetic. >> she is trying out a sports prosthetics for the first time. it has a special shape and, once she gets used to it, it will allow her to run. >> i was scared with every step i took. without two people supporting me i would not be able to walk rit away. >> the 47-ar-old lost her leg due to a tumor. she has published a book of illustrations. >> my drawings have always been about women. i look at body parts in new ways since i received my prosthetic leg. it's also reflected in my pictures. >> she used to spend most of her time painting in her room, but since getting her prosthetic, she has become more active. >> i d