Well, it shouldn't.
40 years ago scientists were.. well, scientists, and they kept their mouths shut outside of their field of expertise.
Now, the phrase "some scientists say" is meaningless; literally. A joke.
Too many "scientists" have become like movie stars. They feel that their little niche makes them experts in everything.
From my perspective, it is time to tell the loudest ones, "Shut up and do science; Discover something beneficial; invent something useful. Figure out how to control the sun".
< /sarc >
Climatologists have made a real mockery of science.
A few weeks back there was a debate about global warming on FOX. The non believer spoke of ice cores, the little ice age and other assorted evidence. When it was the believers turn to talk he launched into a rant about a GOP controlled congress, fringe scientists, and extremist congressmen.