HBO Documentary Films and the National Institute on Aging of the National Institutes of Health ... present ; executive producers, Sheila Nevins, Maria Shriver ; series producer, John Hoffman
a film by Lorenz Knauer ; a NEOS Film GmbH and Co. KG, CC Medienproduktion GmbH & Co. KG, Sphinx Media GbR production in association with Animal Planet [and others] ; produced by Philipp Schall, Philipp Wundt, Michael Halberstadt ; written and directed by Lorenz Knauer
writers/directors, Marion Gruner, Christopher Sumpton ; producers, Christopher Sumpton, Robin Benger, Marion Gruner ; produced in association with Arte France, Unité Découverte et Connaissance ; and in association with Canadian Broadcasting Corporation ; Cogent Benger Productions Inc
Arte France, Grand Angle Productions ; directors, Emmanuelle Sapin, Pascal Goblot, written by Emmanuelle Sapin, Pascal Goblot, Guillaume Pérès ; produced by Guillaume Pérès