There are plenty of instances of "serious" scientists who refused to accept valid research.

Sir Fred Hoyle is an excellent example - he refused to accept the theory of the "Big Bang" due to his anti-religious prejudice.

He was a hugeley respected scientist in his day but when it came down to it the "rational" atheist was unable to accept anything that threatened his established world-view.

To believe that "hard" science has no bias is to buy into the myth that because you are dealing with "pure" numbers that the Science is "pure". All Science is enquiry carried out by human beings and therefore all Science is flawed and biased.