Watson, who is now 86 years old, did something incredibly important in his early days as a researcher. He helped discover the structure of DNA, one of the most significant scientific discoveries of the 20th century. He is a major figure in science.
But Watson also has a history of saying racist and sexist things. And in 2007, at the age of 79, he made some public comments that finally got him shunned by both the scientific community and the general public.