Episode 4 - Penicillin's untold story

Every schoolchild will tell you that Penicillin, one of the great discoveries of the 20th century, was discovered by Alexander Fleming. But it was a young German refugee that brought Penicillin out of the scientific papers and into the hospital, his name was Ernst Chain. Kieran travels to University College London to speak to Ernst’s son, Benny, himself a pioneer in biochemistry.