Inside 16 of the most influential presidential campaigns of the last 50 years.
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Can Alzheimer's Be Stopped?
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Inside Einstein's Mind
Retrace the thought experiments that inspired his theory on the nature of reality.
Making North America: Human
How has the land shaped our lives, from the arrival of the first Americans to today?
Making North America: Life
How did massive volcanic eruptions, inland seas, and land bridges pave the way for life?
Making North America: Origins
Experience the colossal geologic forces that shaped our continent over 3 billion years.
As internet connections multiply so do points of attack and risks to national security.
Dawn of Humanity
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Nuclear Meltdown Disaster
Go inside the Fukushima power plants for the minute-by-minute story of what went wrong.
Watch as the New Horizons spacecraft captures our first clear view of Pluto’s icy surface.
A unique coral garden in Papua New Guinea shows what the future may hold.
Invisible Universe Revealed
Follow the historic rescue of Hubble—the space telescope that unveiled the cosmos.
The Great Math Mystery
Is math invented by humans, or is it the language of the universe?
Hagia Sophia: Istanbul's Ancient Mystery
How has this unique structure, built on a seismic fault, survived centuries of quakes?
Petra: Lost City of Stone
How did early engineers carve tombs into rock cliffs and funnel water to this desert city?
Colosseum: Roman Death Trap
1500 years ago, how did the Romans engineer bloody spectacles and reenact sea battles?
The catastrophic collapse of the ground beneath our feet is a growing worldwide hazard.
Big Bang Machine
Explore the deepest mysteries of the early universe and the quest to find the Higgs Boson.
Bigger Than T. rex
Meet Spinosaurus—the lost killer of the Cretaceous.
Vaccines—Calling the Shots
Examine the science behind vaccinations and the risks of opting out.
Cold Case JFK
Can modern forensic science uncover fresh clues about the assassination of JFK?
Secrets of the Viking Sword
A modern-day swordsmith reverse engineers the ultimate weapon of the Middle Ages.
Making Stuff: Smaller
See the future of tiny stuff -- from silicon chips to micro-robots that probe the body.
Making Stuff: Stronger
David Pogue tests his mettle against the world's strongest stuff.
Earth From Space
Detailed satellite images reveal the web of connections that sustain life on Earth.
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