How can the most distant quasar be 28 Billion light years away? (Strange Universe Series)

The Universe is thought to be something on the order of 13.75 billion years old. The highest redshift known for a quasar (as of December 2007) is 6.43, which corresponds to a proper distance of approximately 28 billion light-years from Earth. How could light have traveled 28 billion light years with only 13.75 billion years to travel?

This is a continuation in the Strange Universe series.
1—Can nothing exist without the Universe?
2—How can order emerge out of chaos?
3—Where is the center of the Universe?
4—If CERN proves there are parallel universes, will you move?
5—If the universe expands at faster than the speed of light, does it begin to go back in time?
6—What is the expanding universe expanding into?
7—Big Bang Theory—How can you divide infinity into a single finite whole?
8—How would you answer this speed-of-light question?
9—What happens when the expansion of the Universe reaches the speed of light?
10—What’s your Strange Universe example to illustrate Sir Arthur Eddington’s quote?