World's largest WHY database

We have come across websites that are dedicatedly write about travel, finance, etc. Now, there is one website that is vying to be the world's largest WHY database. That is, the website is trying to have answers to all questions that start with a WHY. For example, 'Why is the sky blue' or 'Why is the blood red', etc.

The new website is called Knew This? - Quite an apt name for what the website has to offer. I only wish they move to being able to let users post and answer question pretty soon.