David Attenborough retrocede en el tiempo para investigar los orígenes de la vida.
Martin Williams
Director/a
David Attenborough
Self - Presenter
Philip Donoghue
Self - Palaeontologist, University of Bristol
Justin Marshall
Self - Marine Neurobiologist, University of Queensland
Guy Narbonne
Self - Palaeontologist, Queen's University, Ontario
Jim Gehling
Self - Palaeontoloigst, South Australia Museum