If you let go of a balloon will it go all the way up into outer space?

Why don't dogs get sick?

I wonder why some pigs are black.

I wonder how trees grow.

In December of 2008, our class began keeping track of the many questions we have about the world around us by writing them onto a giant poster we called the "Wonder Wall."  Now, we're going digital with this idea!  Please feel free to answer any of our questions or even to post one of your own!