Nobel Prize; a phrasing question.

I’ve never seen this use of “chimera” before. The only times i’ve heard it are referring to the monster specifically or of two different types of something present in one thing. I did think that maybe Cecil was meaning that a belief in cold fusion and homeopathy would be a chimera, but that would only be one and he’s used the plural.

What does chimera mean in this context?

I’d guess this one: