Scientists offer 10 basic questions to test your knowledge

Here's something for you brainy people who read this here blog: Why is the sky blue? Facts you should know.

And if that isn't enough, some guy came up with a bunch of defenses of why the answers they gave weren't all that useful.

BONUS: Come up with your own list, and we'll see how smart we all are. Or, just what should be on that stinking list.