Season 51

episodes

1. 1. When Whales Could Walk 2024-01-31 54 min 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 the Whales.”...
2. 2. Easter Island Origins 2024-02-07 53 min 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 has swirled aro...
3. 3. Building the Eiffel Tower 2024-02-14 53 min 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 structure on Earth,...
4. 4. Hunt for the Oldest DNA 2024-02-21 54 min 6.0 For decades, scientists have tried to unlock the secrets of ancient DNA. Follow the dramatic quest to recover DNA millions of years old and reveal a lost world from before the last Ice Age.
5. 5. A.I. Revolution 2024-03-27 54 min 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...
6. 6. Great American Eclipse 2024-04-03 54 min Explore the spectacular cosmic phenomenon of a total solar eclipse. In April 2024, the Moon's shadow is sweeping from Texas to Maine, as the U.S. witnesses its last total eclipse until 2044, and scien...
7. 7. Secrets in Your Data 2024-05-15 54 min Whether you’re on social media or surfing the web, you’re probably sharing more personal data than you realize. Find out where your data is going, who’s selling it, and how you – and a new kind of web...
8. 8. Decoding the Universe: Cosmos 2024-05-22 54 min How big is the universe? Will it ever end? Why is so much of it made of mysterious dark matter and energy? See how mind-bending discoveries over the past 50 years have revolutionized our understanding...
9. 9. Solar System: Storm Worlds 2024-10-02 54 min 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 drama...
10. 10. Solar System: Strange Worlds 2024-10-09 54 min 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...
11. 11. Solar System: Volcano Worlds 2024-10-16 54 min All around our solar system, volcanoes are powerful shapers of worlds. Next door on Mars is Olympus Mons, a giant volcanic mountain more than twice the size of Mt. Everest. And closer to the Sun, thou...
12. 12. Solar System: Icy Worlds 2024-10-23 54 min Ice might seem familiar to us on Earth, but out in the solar system, it can get quite exotic. From Uranus’s ultra hot superionic ice, to glaciers of nitrogen ice on Pluto, to carbon dioxide snow on Ma...
13. 13. Solar System: Wandering Worlds 2024-10-30 54 min The classic view of our solar system contains eight orderly planets, some with moons in neat orbits – but when we look closer, we discover a bunch of stuff missing from this simple, clockwork model. W...
14. 14. Decoding the Universe: Quantum 2024-11-06 54 min When we look at the world at the tiniest scales in the subatomic realm, things get weird – very weird. Welcome to the quantum universe, where particles can spin in two directions at once, observing so...
15. 15. Building Stuff: Boost It! 2024-11-13 54 min 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. From helping a blind man see withou...
16. 16. Building Stuff: Reach It! 2024-11-20 54 min From the time our species first evolved, we’ve been on the move. Not content to stay in one place, we’ve imagined and invented and built our way from one place to the next. From deep sea subs to wind-...
17. 17. Building Stuff: Change It! 2024-11-27 54 min Thousands of years of human innovation have allowed us to shape the environment to improve lives. The consequences of our activities are not always benign – but there are solutions. From electrifying...
18. 18. Lost Tombs of Notre Dame 2024-12-18 54 min After the devastating 2019 fire at Notre Dame, two mysterious sarcophaguses were discovered under the cathedral’s stone floor. Who is buried in them, and what secrets will these coffins reveal? Follow...