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General - US & Territories

The United States has experimented with democracy for 250 years, but our system of government was once a radical idea, born in ancient Greece. Ravaged by civil war and tyranny 2,500 years ago, the city of Athens forged a revolutionary new system that gave power to the citizens. Witness the archaeological quest to unearth the ingenious tools and pivotal moments that shaped this unprecedented experiment in self-government. From mysterious fragments of ancient voting machines to mass graves and dramatic assassinations, discover the dark secrets and innovative solutions that defined the world's first direct democracy. What enduring lessons can this surprising historical journey offer us today? (Premiering April 29, 2026 at 9 pm on PBS)

Archaeologists investigate the dramatic origins of democracy in ancient Greece 2,500 years ago.

Athens: Birth of Democracy

US & Territories

A powerful downburst (“rain bomb”) releases a column of rain beneath a thunderstorm.

An invisible, unpredictable atmospheric force is wreaking havoc across the globe, sinking superyachts and bringing down planes. Follow scientists as they race to understand these catastrophic weather events, exploring how they form, what causes their devastating impacts, and how we might someday learn to predict them. From high-tech simulations and drone expeditions into thunderclouds to possible links with climate change, join investigators on the cutting edge of research to discover what's truly behind these terrifying "rain bombs" and how we can protect ourselves from their growing power. (Premiered April 22 at 9 pm on PBS)

A deadly—and growing—global weather phenomenon mystifies scientists.

Rain Bombs

Spacecraft passing in front of the moon with the Earth in the background

A half-century after American astronauts walked on the Moon, NASA and its international partners are taking the dream of Apollo a giant step further. In the coming years, the Artemis missions – named after Apollo's twin sister in Greek mythology – aim to bring astronauts back to the Moon and establish a lunar space station for scientific and commercial exploration. Follow the four members of the Artemis II crew as they embark on a perilous 10-day journey to orbit the Moon, venturing beyond Earth orbit for the first time since Apollo and farther into the Solar System than any humans have gone before. And get an inside look at the preparations needed to overcome the extreme engineering challenges of human-crewed spaceflight, all the way from launch to splashdown. Premiered Wednesday, April 15 at 9 pm on PBS.Correction: This film previously stated that the four engines of the core stage generate 8.8 million pounds of thrust at liftoff. In fact, that much thrust is generated by the entire rocket including the boosters, not the core stage alone. The film has been updated accordingly.

Follow the Artemis mission to bring humanity back to the Moon for the first time since Apollo.

Return to the Moon

Green graphic of a brain sketch and neurons.

Are you in control, or is your brain controlling you? Dive into the latest research on the subconscious with neuroscientist Heather Berlin. Sleepwalking, anesthesia, game theory, and more reveal surprising insights in this eye-opening journey to discover what’s really driving the decisions you make. (Episode 2 of a two-part series, premiered May 24, 2023)

Dive into the subconscious to see what’s really driving the decisions you make.

Your Brain: Who's in Control?

Purple graphic of a brain sketch and neurons.

Is what you see real? Join neuroscientist Heather Berlin on a quest to understand how your brain shapes your reality, and why you can’t always trust what you perceive. In the first hour of this two-part series, learn what the latest research shows about how your brain processes and shapes the world around you, and discover the surprising tricks and shortcuts your brain takes to help you survive. (A two-part series. Part 1 premiered May 17, 2023)

Neuroscientists discover the tricks and shortcuts the brain takes to help us survive.

Your Brain: Perception Deception

On March 26, 2024, the world collectively gasped as a massive container ship, the Dali, lost control and plowed into the landmark Francis Scott Key Bridge in Baltimore. The busy four-lane bridge suffered a catastrophic collapse and crashed into the Patapsco River. Six highway workers were killed, and the Port of Baltimore – a crucial link in the global shipping chain on the Eastern Seaboard of the United States – was blocked by thousands of tons of twisted steel and concrete. How did a modern ship lose all power and propulsion? And why did the bridge fail so catastrophically? Follow the high-stakes rescue and recovery, the efforts to reopen the port, and the investigations into what went wrong and how many other crucial bridges are at risk. (Premiered February 26, 2025 at 9 pm on PBS)

Follow the investigation into the deadly container ship collision that closed the Port of Baltimore.

Baltimore Bridge Collapse

How big is the universe? If it began with the Big Bang, will it also have an end? Is there life beyond our planet? Questions like these inspired the launch of Voyager I in 1977 and have driven innovative space research and exploration ever since. Trace ground-breaking discoveries that have transformed our picture of the universe, from an age when we knew of no planets beyond our solar system, to today, when we have evidence of thousands and estimate trillions more. And follow the teams trying to solve two of the biggest mysteries in cosmology today: What are dark matter and dark energy? (Premiered May 22 at 9 pm on PBS)

Explore big discoveries that have revolutionized our understanding of the universe.

Decoding the Universe: Cosmos

NOVA revolves around a simple premise: the world of science is exciting! For NOVA viewers, science means adventure and exploration--because from ants to aliens, this weekly documentary series probes the far reaches of earth, sea and stars.  NOVA proves that science is neither secret lore nor sacred ritual but rather, at its heart, a lifelong journey of discovery.

You might sign up for a dating app to find the love of your life. But while you’re swiping, these apps are collecting all kinds of information about you. What do you they know about you? And what are they doing with your data?

You might be collecting matches, but dating apps are collecting your data.

What Dating Apps Know About You

Don’t fret – at-risk cheeses are not going to disappear instantly but they getting much harder to make.

The culprit is a lack of microbial biodiversity in the mold used to make iconic French cheeses.

These cheeses are at risk of going extinct

In California an AI tool uses more than a thousand mountaintop surveillance cameras to look for early signs of wildfires.

Firefighters are using AI to find wildfires before they explode.

How A.I. is fighting wildfires

A product you were just talking about pops up in an online ad. How? Advertising algorithms are so good that they may know what you want even before you do.

It doesn’t have to – advertisers may already have all the information they want to know about you.

Is your phone listening to you?

Invisible and mysterious, dark matter shapes the cosmos, but scientists are still trying to figure out what exactly it is.

A team of researchers hunt for dark matter deep underground in the Black Hills of South Dakota.

The Deepest Underground Lab in the U.S.

Four and a half billion years ago, Earth was battered by relentless asteroid impacts powerful enough to vaporize oceans and melt its crust. Despite the chaos, life emerged anyway.

What studying the surface of the Moon revealed about Earth’s apocalyptic youth.

When Earth Was Bombarded by Asteroids

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 something changes it, and something on one side of the galaxy can instantly affect something on the other, as if the space between them didn’t exist. Buckle up for a wild ride through the discoveries that proved all of this to be true and paved the way for the digital technologies we enjoy today – and the powerful quantum sensors and computers of tomorrow. Premiered November 6, 2024 at 9 pm on PBSCorrection: The original version of this film had misplaced punctuation, which falsely implied that in 1974, Stephen Hawking was the first to predict black holes. The film, captions, and transcript have been amended to clarify that in 1974, Stephen Hawking first predicted the phenomenon now known as Hawking radiation, referred to in the film as the “Achilles’ heel” of black holes.

Dive into the universe at the tiniest – and weirdest – of scales.

Decoding the Universe: Quantum

A skeleton of a whale in a desert-like area.

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.” Now, paleontologists have unearthed a whole new species of ancient whale dating to 43 million years ago, and this predator wasn’t just able to swim – it also had four legs and could walk. Follow scientists as they search for new clues to the winding evolutionary path of mammals that moved from the land into the sea to become the largest animals on Earth. (Premiered January 31, 2024 at 9 pm on PBS.)

Giant fossils uncovered in the Sahara Desert reveal new secrets of how whales evolved.

When Whales Could Walk

Sir David Attenborough investigates a unique site in southern England where amateur fossil hunters uncovered giant mammoth bones and evidence of Neanderthals. A team of paleontologists and archaeologists soon discover that the site preserves rare evidence of the extinct beasts and early human inhabitants of Britain dating to over 200,000 years ago. What skills did the early humans have to help them survive during the Ice Age? How did they hunt and protect themselves against formidable creatures such as mammoths? With hands-on experiments with replicas of Neanderthal-era spears and stone tools, the world of prehistoric Britain comes to life. (Premiered February 16, 2022)

Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.

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Decoding the Universe: Cosmos

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Decoding the Universe: Cosmos

Decoding the Universe: Quantum

When Whales Could Walk

Episodes

Athens: Birth of Democracy

Rain Bombs

Return to the Moon

Your Brain: Who's in Control?

Your Brain: Perception Deception

Baltimore Bridge Collapse

Shorts

What Dating Apps Know About You

These cheeses are at risk of going extinct

How A.I. is fighting wildfires

Is your phone listening to you?

The Deepest Underground Lab in the U.S.

When Earth Was Bombarded by Asteroids

Watch Page

Hero Area

Decoding the Universe: Cosmos

Upcoming Schedule

Decoding the Universe: Cosmos

Decoding the Universe: Quantum

When Whales Could Walk

Episodes

Athens: Birth of Democracy

Rain Bombs

Return to the Moon

Your Brain: Who's in Control?

Your Brain: Perception Deception

Baltimore Bridge Collapse

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Shorts

What Dating Apps Know About You

These cheeses are at risk of going extinct

How A.I. is fighting wildfires

Is your phone listening to you?

The Deepest Underground Lab in the U.S.

When Earth Was Bombarded by Asteroids