Are humans really fish? Why are we the only animals with chins? How much of our DNA do we share with the trillions of bacteria in our bodies? For centuries, scientists have chased the secrets of how life on our planet arose. From birds and butterflies to mushrooms and moose, evolutionary biologist Max Telford talks to the Science Museum's Roger Highfield, about one of science’s greatest quests. We meet long-lost ancestors, picturing them in the environment of a much younger earth.

Max Telford is the Jodrell Professor of Zoology and Comparative Anatomy at University College London. He works as an evolutionary biologist using trees of relationships to piece together the story of early evolution of the animal kingdom.

Roger Highfield OBE was science editor of The Daily Telegraph for 20 years, editor of New Scientist and is currently Science Director of the Science Museum Group. His books include The Dance of Life; Symmetry, Cells and How we Become Human.