Como Actor/Actriz
Nova
Host
Polar Extremes
Self - Host
Polar Extremes
Ice Age Death Trap
Himself - Denver Museum of Nature & Science
Prehistoric Worlds
Self - Paleontologist and Director, Smithsonian
Walrus: Life on Thin Ice
Self - Presenter
Making North America
Self - Host
Hvor træerne blokerer for lyset
Eric 'Concerned Ranger' Jones
Ice Age Footprints
Self - Host
Great Yellowstone Thaw
Himself - Presenter
24 Hours After: Asteroid Impact