Quora app

One of the new apps that I've got on my smartphone.  Well, it's interesting.  Ask a question, and there are some answers that pop up to the question.  For example, here's an answer to a question that seems to be on people's mind these days:

Homosexuality: If homosexuality is innate/genetic, how has it survived evolutionary selection, given that a homosexual couple produces no offspring?

There are some interesting answers to this question that sound plausible.  It is but one of many examples of what you can find out about with this app.  Answers to the big questions, you might say.