This is interesting. I never heard of leap seconds before.
http://online.wsj.com/article_email/0,,SB112258962467199210-H9je4Nilal4o52nbYCIbq6Em4,00.html
Why the U.S. Wants
To End the Link
Between Time and Sun
Astronomers Say Wait a Sec,
Sundials Would Be Passé;
Mean Blow to Greenwich
By KEITH...