NOVA | Switching Genes On and Off How "junk" DNA helped solve an evolutionary m... How "junk" DNA helped solve an evolutionary mystery. (4:54)

• Duration: 4:54
  Copyright © 2010, 2009 WGBH Educational Foundation. All Rights Reserved.
  TV Rating: NR
  

NOVA | Mt. St. Helens: Back From the Dead 30 years after the massive eruption...could i... 30 years after the massive eruption...could it happen again? (53:07)

Chapter(s) 1 - 7 of 7

• 1. 1.Preview,
  2. 2.The Eruption,
  3. 3.The Blowdown Zone,
  4. 4.Taking Stock,
  5. 5.Bouncing Back,
  6. 6.The Volcano Awakens,
  7. 7.The Historic Record

• Duration: 53:07
  Copyright © 2010 WGBH Educational Foundation and Oesterreichischer Rundfunk
  TV Rating: TV-PG
  

NOVA | Mind Over Money Can markets be rational when humans aren't? Can markets be rational when humans aren't? (52:52)

Chapter(s) 1 - 8 of 8

• 1. 1.Preview,
  2. 2.Irrational Behavior,
  3. 3.Financial Meltdown,
  4. 4.The Housing Boom,
  5. 5.Speculative Bubbles,
  6. 6.Subtle Influences,
  7. 7.Efficient Markets Hypothesis,
  8. 8.Derivatives and Mathematics

• Duration: 52:52
  Copyright © 2010 WGBH Educational Foundation
  TV Rating: NR
  

NOVA | Hunting the Edge of Space: Part 2 The Ever-Expanding Universe The Ever-Expanding Universe (52:55)

Chapter(s) 1 - 7 of 7

• 1. 1.Preview,
  2. 2.George Ellery Hale's Vision,
  3. 3.The Nebulae,
  4. 4.Redshift,
  5. 5.First Evidence,
  6. 6.Hubble Space Telescope,
  7. 7.Pushing the Boundaries

• Duration: 52:55
  Copyright PBS DP COVE
  TV Rating: NR
  

NOVA | Hunting the Edge of Space: Part 1 The Mystery of the Milky Way The Mystery of the Milky Way (52:55)

Chapter(s) 1 - 6 of 6

• 1. 1.Preview,
  2. 2.Eye on the Sky,
  3. 3.A Two "Billion" Mile Journey,
  4. 4.Evolution of the Telescope,
  5. 5.The Planet Hunters,
  6. 6.Our Galaxy

• Duration: 52:55
  Copyright © 2010 WGBH Educational Foundation and Twin Cities Public Television, Inc. All Rights Reserved
  TV Rating: NR
  

NOVA | The Pluto Files Take a cross-country journey to explore the r... Take a cross-country journey to explore the rise and fall of America's favorite planet. (52:53)

Chapter(s) 1 - 6 of 6

• 1. 1.Preview,
  2. 2.Pluto Hater,
  3. 3.Cultural Icons,
  4. 4.Local Hero,
  5. 5.What's in a Name?,
  6. 6.New Horizons

• Duration: 52:53
  Copyright 2010 WGBH Educational Foundation
  TV Rating: NR
  

NOVA | Video Short: The Founders of Modern Astronomy William Herschel gets the credit, but his sis... William Herschel gets the credit, but his sister Caroline was also a pioneer astronomer. (4:13)

• Duration: 4:13
  Copyright PBS DP COVE
  TV Rating: NR
  

NOVA | Extreme Cave Diving Scientists journey into one of Earth's most d... Scientists journey into one of Earth's most dangerous and beautiful underwater frontiers. (52:51)

Chapter(s) 1 - 6 of 6

• 1. 1.Preview,
  2. 2.Underwater Caves,
  3. 3.Animal Fossils,
  4. 4.Birthplace of Humankind,
  5. 5.A Dangerous Dive,
  6. 6.Warning for the Future

• Duration: 52:51
  Copyright © 2010 NGHT, LLC and WGBH Educational Foundation. All Rights Reserved
  TV Rating: TV-PG
  

NOVA | Ghosts of Machu Picchu Why did the Incas abandon their city in the c... Why did the Incas abandon their city in the clouds? (52:52)

Chapter(s) 1 - 7 of 7

• 1. 1.Preview,
  2. 2.Lost City,
  3. 3.Patallacta Skulls,
  4. 4.Royal Architecture,
  5. 5.Remarkable Engineering,
  6. 6.Location, Location, Location,
  7. 7.A Site Left Untouched

• Duration: 52:52
  Copyright © 2009 NGHT, Inc. and WGBH Educational Foundation.
  TV Rating: TV-PG
  

NOVA | Riddles of the Sphinx A marvel of ancient engineering is vanishing.... A marvel of ancient engineering is vanishing. Can it be saved? (53:07)

Chapter(s) 1 - 7 of 7

• 1. 1.Preview,
  2. 2.The Great Sphinx,
  3. 3.Building Big,
  4. 4.Ancient Tools,
  5. 5.Who Built the Sphinx?,
  6. 6.The New Kingdom,
  7. 7.Eternal Life

• Duration: 53:07
  Copyright © 2010 WGBH Educational Foundation
  TV Rating: TV-G