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  • : 1033
  • : 306
  • PBS
  • 21
  • Documentary

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51x1
When Whales Could Walk
Episode overview
In Egypt’s Sahara Desert, massive skeletons with strange skulls and gigantic teeth jut out from the sandy ground. This fossil graveyard, millions of years old, is known as the “Valley of .. show full overview
51x2
Easter Island Origins
Episode overview
How were the giant stone heads of Rapa Nui–also known as Easter Island–carved and raised, and why? Since Europeans arrived on this remote Pacific island over 300 years ago, controversy .. show full overview
51x3
Building the Eiffel Tower
Episode overview
Explore the revolutionary engineering behind Paris’s iconic landmark. Completed in just over two years for the 1889 World’s Fair, the iron tower smashed the record for the tallest .. show full overview
51x4
Hunt for the Oldest DNA
Episode overview
For decades, scientists have tried to unlock the secrets of ancient DNA. But life’s genetic blueprint is incredibly fragile, and researchers have struggled to find DNA in fossils that .. show full overview
51x5
A.I. Revolution
Episode overview
A.I. tools like ChatGPT seem to think, speak, and create like humans. But what are they really doing? From cancer cures to Terminator-style takeovers, leading experts explore what A.I. can – and can’t – do today, and what lies ahead.
51x6
Great American Eclipse
Episode overview
Explore the spectacular cosmic phenomenon of a total solar eclipse.
51x7
Secrets in Your Data
Episode overview
Whether you’re on social media or surfing the web, you’re sharing more personal data than you realize.
51x8
Decoding the Universe: Cosmos
Episode overview
How big is the universe? If it began with the Big Bang, will it also have an end? Is there life beyond our planet?
51x9
Sea Change: Bounty in the Gulf of Maine
Episode overview
Discover the Gulf of Maine and how its bounty was forever changed by a global appetite for fish. Now with the Gulf warming faster than 97 percent of the world’s oceans, witness how wildlife and people are adapting to rapid change.
51x10
Sea Change: Peril in the Gulf of Maine
Episode overview
Dive into Cashes Ledge with scientists as they race to discover if this remote and relatively pristine part of the Gulf of Maine is vulnerable to rapid warming. Can Cashes still offer hope for the Gulf’s more than 3,000 species?
51x11
Sea Change: Survival in the Gulf of Maine
Episode overview
Now at a crossroads for the future of the Gulf of Maine and our oceans, Indigenous peoples and scholars practice climate resilience and adaptation, scientists track developments, and entrepreneurs find new ways to make a living from the sea.
51x9
Solar System: Storm Worlds
Episode overview
Out in the solar system, the weather gets wacky - with globe-spanning dust storms, monsoons of liquid methane, and lightning 10 times stronger than here on Earth. Discover the forces driving the dramatic weather on neighboring planets and moons.
51x10
Solar System: Strange Worlds
Episode overview
From a dwarf planet that looks like a deflated football, to a tiny moon with cliffs taller than Mt. Everest, to the spectacular rings of Saturn, discover how the effects of gravity produce the amazing variety of weird worlds in our solar system.
51x11
Solar System: Volcano Worlds
Episode overview
Around our solar system, violent eruptions are shaping distant worlds. Discover the explosive forces that helped create some of the most dynamic worlds in our cosmic neighborhood - and what makes the volcanoes right here on Earth so special.
51x12
Solar System: Icy Worlds
Episode overview
Out in the solar system, ice can get bizarre. Visit strange, frozen worlds - from Uranus's ultra-hot superionic ice, to glaciers of nitrogen ice on Pluto, to carbon dioxide snow on Mars - and discover why the ice here on Earth is so unique.
51x13
Solar System: Wandering Worlds
Episode overview
From meteorites that impact Earth, to a moon that orbits backwards, to an imposter lurking in the asteroid belt, a variety of strange, wandering worlds are rewriting what we know - and even how we think about - our solar system.
51x14
Decoding the Universe: Quantum
Episode overview
Dive into the universe at the tiniest – and weirdest – of scales.
51x14
Decoding the Universe: Quantum
Episode overview
Dive into the universe at the tiniest - and weirdest - of scales.
51x15
Building Stuff: Boost It!
Episode overview
Around the world, engineers are finding ingenious ways to amplify our abilities and senses – allowing us to access and shape the world way beyond our natural gifts.
51x15
Building Stuff: Boost It!
Episode overview
Is engineering humanity's superpower? See how we can amplify our natural abilities in amazing ways.
51x16
Building Stuff: Reach It!
Episode overview
Humans are born to roam. See how engineers are inventing new ways to explore and extend our range.
51x17
Building Stuff: Change It!
Episode overview
From electric flight to artificial noses, engineers are finding new ways to preserve our planet.
51x18
Lost Tombs of Notre Dame
Episode overview
Mysterious bodies are found under one of the world’s most famous cathedrals.

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