Secret to living longer may be your social life: www.ted.com/talks/susan_pinker_the_secret_to_living_longer_may_be_your_social_life
Secret to living longer may be your social life: www.ted.com/talks/susan_pinker_the_secret_to_living_longer_may_be_your_social_life
Growing old in America: www.pewsocialtrends.org/2009/06/29/growing-old-in-america-expectations-vs-reality/