• Estreou: Mar 1974
  • Episódios: 1034
  • Seguidores: 306
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  • PBS
  • Quarta-Feira às 21
  • Documentary

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Temporada 39
39x1
Deadliest Volcanoes
Episode overview
Exibido em:
Jan 04, 2012
Millions of people around the world live in the shadow of active volcanoes. Under constant threat of massive volcanic eruptions, their homes and their lives are daily at risk from these .. show full overview
39x2
Bombing Hitler's Dams
Episode overview
Exibido em:
Jan 11, 2012
In 1943 a squadron of Lancaster bombers staged one of the most audacious raids in military history: destroying two gigantic dams in Germany’s industrial heartland and cutting the water .. show full overview
39x3
3D Spies of WWII
Episode overview
Exibido em:
Jan 18, 2012
During World War II, Hitler’s scientists developed terrifying new weapons of mass destruction. Alarmed by rumors of advanced rockets and missiles, Allied intelligence recruited a team of .. show full overview
39x4
Mystery of a Masterpiece
Episode overview
Exibido em:
Jan 25, 2012
In October 2007, a striking portrait of a young woman in Renaissance dress made world news headlines. Originally sold nine years before for around $20,000, the portrait is now thought to .. show full overview
39x5
Ice Age Death Trap
Episode overview
Exibido em:
Fev 01, 2012
In a race against developers in the Rocky Mountains, archaeologists uncover a unique fossil site packed with astonishingly well-preserved bones of mammoths, mastodons, and other giant .. show full overview
39x6
Separating Twins
Episode overview
Exibido em:
Fev 08, 2012
Witness the extraordinary surgery that will allow twin girls, born joined at the head, to live separate lives.
39x7
Cracking Your Genetic Code
Episode overview
Exibido em:
Mar 28, 2012
What will it mean when most of us can afford to have the information in our DNA—all three billion chemical letters of it—read, stored, and available for analysis? In "Cracking Your .. show full overview
39x8
Hunting the Elements
Episode overview
Exibido em:
Abr 04, 2012
Where do nature’s building blocks, called the elements, come from? They’re the hidden ingredients of everything in our world, from the carbon in our bodies to the metals in our .. show full overview
39x9
Deadliest Tornadoes
Episode overview
Exibido em:
Abr 11, 2012
In April 2011, the worst tornado outbreak in decades left a trail of destruction across the U.S., killing more than 360 people. Why was there such an extreme outbreak? How do such .. show full overview
39x10
Why Ships Sink
Episode overview
Exibido em:
Abr 18, 2012
Twenty million passengers embark on cruises each year, vacationing in deluxe "floating cities" that offer everything from swimming pools to shopping malls to ice skating rinks. And the .. show full overview
39x11
Secrets of the Sun
Episode overview
Exibido em:
Abr 25, 2012
It contains 99.9 percent of all the matter in our solar system and sheds hot plasma at nearly a million miles an hour. The temperature at its core is a staggering 27 million degrees .. show full overview
39x12
Secrets of the Viking Sword
Episode overview
Exibido em:
Out 10, 2012
The Vikings were among the fiercest warriors of all time. Yet only a select few carried the ultimate weapon of their era: the feared Ulfberht sword. Fashioned using a process that would .. show full overview
39x13
Forensics on Trial
Episode overview
Exibido em:
Out 17, 2012
There is a startling gap between the glamorous television world of “CSI” and the gritty reality of the forensic crime lab. With few established scientific standards, no central .. show full overview
39x14
Mystery of Easter Island
Episode overview
Exibido em:
Nov 07, 2012
A remote, bleak speck of rock in the middle of the Pacific, Easter Island, or Rapa Nui, has mystified the world ever since the first Europeans arrived in 1722. How and why did the .. show full overview
39x15
Ultimate Mars Challenge
Episode overview
Exibido em:
Nov 14, 2012
Why go back to Mars? Far from dead, Mars holds untold potential. Nearly half a century of Mars exploration has yielded tantalizing clues that Mars may once have harbored life—and may .. show full overview
39x16 Final da Temporada
Inside the Megastorm
Episode overview
Exibido em:
Nov 18, 2012
Was Hurricane Sandy a freak combination of weather systems? Or are hurricanes increasing in intensity due to a warming climate? How did this perfect storm make search and rescue so .. show full overview

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