Competing At Rio Olympics With One Lung

Santiago Lange, an Argentine sailor, has competed in five Olympic Games. He's in Rio for his sixth edition despite losing one lung to cancer.

Jalila Essaidi, an artist and entrepreneur --who works with modern biotechnology-- says she has created outfits made from cow dung.

And an American journalist explains why some rich people are toying with the idea of injecting themselves with young people's blood.