Jimmy Carter, 39th President of the United States is 100 years old today. He is not only the longest lived US president by quite a few years, but, I think, the longest lived of any world leader. Whatever one thinks of his presidency, he spent his "retirement" doing good works, whether building houses for Habitat for Humanity or trying to make peace and further human rights all around the world, for which he was awarded the Nobel Peace Prize in 2002. A truly amazing life by any standard. Happy Birthday, Jimmy!