| hhs.gov | US Life Expectancy Improves |
| abs.gov.au | Life expectancy of Aboriginal and Torres Straits Islander Peoples (Australia |
| longevity-science.org | Unraveling the Secrets of Human Longevity |
| nejm.org | Review of The Quest for Immortality: Science at the Frontiers of Aging |
| utexas.edu | Roman Life Expectancy |
| un.org | Office of Population Studies, United Nations |
| statistics.gov.uk | UK Government publications regarding life expectancy |
| pitt.edu | What Kills Us? Yesterday, Today and Tomorrow |
| innovitaresearch.org | Innovita Research Institute |
| uiowa.edu | The Hayflick Limit |
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