Answer:
When I get closer my tail grows longer but when I go away my tail leads the way.
I've been around for millions of years, but I am no more than a month old. What am I?
I am bought by the yard but worn by the foot
My first two letters say my name. My last letter asks a question. What I embrace I destroy.
I'm the source of all emotion but I'm caged in a white prison.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.