Which is better? A or B?

Scientists have discovered that it is B .

Why?

You're writing an article, blog post or web page that talks about " Scientists " having discovered or said something.

Please link the word "Scientists" to an article, academic paper or web page that backs up what you're writing about.

Some readers find it frustrating to read science stories in the press and think "that's fascinating" but can't find out any more because we don't know which scientists an article refers to.
As we've seen with scares like Anti-MMR, a few stories about some research can lead to dramatic misunderstanding of science publications. Knowing which publications are being referred to could help the reader to make up their own mind about research.
If your story is accurate and exciting then your article could become a place for equally exciting debate, bringing with it more visitors to your site.
Readers may offer fresh insight into your story which could help generate further articles on similar subjects. Your readers become your researchers.