Helen Czerski
В роли:  Self - Presenter 3 episodes, 2015

Brent Shock
В роли:  Self - Gold prospector 1 episode, 2015

Bill Anders
В роли:  Self - Apollo 8 Astronaught 1 episode, 2015

David Perrett
В роли:  Self - Psychologist, University of St. Andrews 1 episode, 2015

Beverly Glover
В роли:  Self - Head, Cambridge University Botanical Gardens 1 episode, 2015

Dale Gary
В роли:  Self - Professor, Big Bear Solar Observatory 1 episode, 2015

Anya Hurlbert
В роли:  Self - Vision psychologist 1 episode, 2015

Corinna Abesser
В роли:  Self - Expert, chemistry of Earth atmosphere and water systems 1 episode, 2015

Garry Hayes
В роли:  Self - Geologist 1 episode, 2015

Stephen Mojzsis
В роли:  Self - Professor of Geology, University of Colorado 1 episode, 2015

Jo Setchell
В роли:  Self - Anthropologist, Durham University 1 episode, 2015

Kerry Perkins
В роли:  Self - Marine Biologist 1 episode, 2015

Andrew Smith
В роли:  Self - Zoologist, Anglia Ruskin University 1 episode, 2015

James De Buizer
В роли:  Self - Sofia, Science operations manager 1 episode, 2015

Ron Douglas
В роли:  Self - Professor, Visual Neuroscience at London City University 1 episode, 2015

Nina Jablonski
В роли:  Self - Anthropologist 1 episode, 2015

David Margulies
В роли:  Self - Artist, historian and devotee of blue 1 episode, 2015

Mark Lythgoe
В роли:  Self - Professor, University College London 1 episode, 2015

George Rossman
В роли:  Self - Geologist, California Institute of Technology 1 episode, 2015

Anna Warren
В роли:  Self - Senior Beamline Scientist 1 episode, 2015

Stephanie Henson
В роли:  Self - Professor at University of Southampton 1 episode, 2015