Answer:
Never resting, never still. Moving silently from hill to hill. It does not walk, run or trot. All is cool where it is not. What is it?
Lovely and round, I shine with pale light. Grown in the darkness, a lady's delight. What am I?
If I drink I die. If I eat I am fine. What am I?
I am the kind of ant that's good at math.
You can see it everyday, but cannot touch it at will. What is it?
What language does a billboard speak?