Answer:
It's been around for millions of years, but is never more than a month old. What is it?
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
I can be written, I can be spoken, I can be exposed, I can be broken.
What English word retains the same pronunciation, even after you take away four of its five letters?
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.
People take me on walks and I run and have fun. What am I?