Jim Allison won the Nobel Prize last year for transforming the way that cancer is treated, along with Tasuku Honjo, a scientist at Kyoto University.
At the start of his career, Allison didn't set out to cure cancer. Instead, he wanted to better understand how a part of the human immune system worked in the body.
That led to immunotherapy treatments that fight cancer by using the body's built-in immune system.
His advice for young scientists is: "work on what really interests you, and you care...
Read this story at Business Insider