Conhecido(a) por:
Ice Age Death Trap
Himself - Denver Museum of Nature & Science 9.0
Polar Extremes
Self - Host 5.0
Hvor træerne blokerer for lyset
Eric 'Concerned Ranger' Jones 5.4
Prehistoric Worlds
Self - Paleontologist and Director, Smithsonian 9.0
24 Hours After: Asteroid Impact
0.0
Ice Age Footprints
Self - Host 0.0
Making North America
Self - Host 0.0
Walrus: Life on Thin Ice
Self - Presenter 10.0
NOVA
Host 7.0
Great Yellowstone Thaw
Himself - Presenter 5.5