Answer:
I saw a strange creature. Long, hard, and straight, thrusting into a round, dark opening. Preparing to discharge its load of lives. Puffing and squealing noises accompanied it, then a final screech as it slowed and stopped.
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
Runs smoother than any rhyme, loves to fall but cannot climb!
Reaching stiffly for the sky, I bare my fingers when its cold. In warmth I wear an emerald glove and in between I dress in gold.
Twigs and spheres and poles and plates. Join and bind to reason make.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?