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First Man on the Moon
He risked his life for the nation and became a world icon, but who was Neil Armstrong?
S41 Ep22 | 53m 10s
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Emperor's Ghost Army
Explore the buried clay warriors, chariots, and bronze weapons of China’s first emperor.
S41 Ep20 | 52m 52s
Bigger Than T. rex
Meet Spinosaurus—the lost killer of the Cretaceous.
S41 Ep19 | 53m 9s
First Air War
How did fighter planes evolve from rickety biplanes into deadly machines during WWI?
S41 Ep18 | 52m 22s
Ben Franklin's Balloons
Experts recreate the French's daring first manned flights, which Franklin had chronicled.
S41 Ep17 | 52m 52s
Vaccines—Calling the Shots
Examine the science behind vaccinations and the risks of opting out.
S41 Ep14 | 53m 10s
Why Sharks Attack
Will analyzing the hunting instincts of this endangered predator reduce deadly attacks?
S41 Ep11 | 53m 40s
What made Haiyan so destructive, and how can we prepare for the next monster storm?
S41 Ep6 | 52m 52s
Great Cathedral Mystery
Master craftsmen explore how Florence’s monumental dome was built nearly 600 years ago.
S41 Ep5 | 52m 37s
Zeppelin Terror Attack
Discover how Germany’s Zeppelins rained fiery terror on London in World War I.
S41 Ep2 | 52m 52s
Alien Planets Revealed
Are we alone—and if not, what might the inhabitants of far-flung worlds look like?
S41 Ep1 | 53m 7s