I've known (as many of us have known) about the bonobo sexuality for years. The problem is, though, that mainstream society (the more intellectual crowd there) knew about them, too. Yet they ignored (and still ignore) it. It's a thing of:
The world and everything in it was created in six days no more than 7,000 years ago; god said it, I believe it, that settles it.
How can you argue with that (lack of) logic? (Uh... why did god have to rest on the seventh day? Was he/she/it tired?)