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NOVA
The Grand Canyon's Oldest Rocks
“This rock is more than 4000 feet below the rim of the canyon, and it’s one of the oldest rocks of them all. “ By measuring the radioactive elements in this Granodiorite—the rock here at the bottom—geologists have figured out it formed 1.7 billion years ago.
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53:32
Follow the investigation into the deadly container ship collision that closed the Port of Baltimore.
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53:40
Archaeologists uncover new truths about Pompeii, a wealthy Roman playground with dark secrets.
53:40
A long-lost ancient cemetery opens the door to a unique period in Egyptian history.
53:35
Fossils reveal how birds survived the killer asteroid and became today’s only living dinosaurs.
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53:40
Follow the race to build a world-class airport on the site of one of America’s busiest flying hubs.
53:40
Mysterious bodies are found under one of the world’s most famous cathedrals.
53:40
From electric flight to artificial noses, engineers are finding new ways to preserve our planet.
53:40
Humans are born to roam. See how engineers are inventing new ways to explore and extend our range.
53:40
Is engineering humanity’s superpower? See how we can amplify our natural abilities in amazing ways.
