What If The Dinosaurs Hadn't Died Off?
31:56
Ammonia-Based Lifeforms
35:55
Stargates
31:37
The Stanford Torus Space Habitat
42:25
Posthuman Pathways: Strange And Awesome Destinations On Humanity's Future Journeys
13:45
What were Tyrannosaur Forelimbs Used For?
45:46
Battlefleets
31:15
An Ancient Roman Shipwreck May Explain the Universe
37:43