sciencehabit writes: As we age, the core of our biological being—the sequence of our DNA, which makes up our genes—remains the same. Yet recent research suggests that more subtle chemical changes to our DNA occur as we age. Now, a comparison of the DNA of a newborn baby with that of a centenarian shows that the scope of these changes can be dramatic, and they may help explain why our risk of cancer and other diseases increases as we get older. Link to Original Source
You can do this in a number of ways. IBM chose to do all of them.
Why do you find that funny?
-- D. Taylor, Computer Science 350