• Premiered: Mar 1974
  • Episodes: 1025
  • Followers: 302
  • Running
  • PBS
  • Wednesday at 21
  • Documentary

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Season 51
51x1
When Whales Could Walk
Episode overview
Air date
Jan 31, 2024
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
Air date
Feb 07, 2024
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
Air date
Feb 14, 2024
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
Air date
Feb 21, 2024
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
Polar Extremes
Episode overview
Air date
Mar 20, 2024
This episode has no summary.
51x5
A.I. Revolution
Episode overview
Air date
Mar 27, 2024
Explore the promise and perils of new A.I. technologies.
51x7
Star Chasers of Senegal
Episode overview
Air date
Mar 27, 2024
This episode has no summary.
51x6
Great American Eclipse
Episode overview
Air date
Apr 03, 2024
Explore the spectacular cosmic phenomenon of a total solar eclipse.
51x9
Secrets of the Forbidden City
Episode overview
Air date
Apr 03, 2024
This episode has no summary.
51x10
Ancient Maya Metropolis
Episode overview
Air date
Apr 10, 2024
This episode has no summary.
51x11
Making North America Origins
Episode overview
Air date
Apr 17, 2024
This episode has no summary.
51x12
Making North America Life
Episode overview
Air date
Apr 24, 2024
This episode has no summary.
51x13
Making North America Human
Episode overview
Air date
May 01, 2024
This episode has no summary.
51x7
Secrets in Your Data
Episode overview
Air date
May 15, 2024
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
Air date
May 22, 2024
How big is the universe? If it began with the Big Bang, will it also have an end? Is there life beyond our planet?

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