South Africa

Whenever Vivian Davis feels like doing something, she does it. So when she felt like joining the Peace Corps, she did - at age 78.

Nelson Mandela, who died Dec. 5 at age 95 in Johannesburg, South Africa, was one of the most remarkable heroes of the 20th century. He organized and led armed resistance against South Africa's apartheid regime, which had disenfranchised 23 million black citizens and forced them to live in abysmal…