Answer:
What goes around the world and stays in a corner?
My children are near and far. No matter that I know where they are. The gift I give them make their day. But if I were gone they would wander away.
What can be swallowed, but can swallow you?
What is lengthened by being cut at both ends?
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.