The Fountain of Youth by Lucas Cranach the Elder

David Sinclair, Ph.D. is Co-Director of the Paul F. Glenn Laboratories for the Molecular Biology of Aging, a Professor of Genetics at Harvard Medical School.

Comparison of male and female life expectancy at birth for countries and territories as defined in the 2013 CIA Factbook, with selected bubbles labelled. The dotted line corresponds to equal female and male life expectancy. The apparent 3D volumes of the bubbles are linearly proportional to their population.