Up until age 104, Chitetsu Watanabe was still working the gardens at his hand-built family home.

What's the secret to a long, happy life together? Perhaps the people best qualified to answer that question are Dan and Bertha Paveilck, who are celebrating their 79th wedding anniversary.

Emma Morano, 116, started eating the same thing every day when she was diagnosed with anemia in her 20s.