Primary Science

00: Goes Back in Time | Operation Ouch!

Dr Chris and Dr Xand turn back the clock and look at what medicine was like in the First World War. They meet a Paralympian runner wh...

Don't Panic About Puberty | Operation Ouch!

In this special episode, Dr Chris and Dr Xand take a look at what happens to your body, and why, when you reach puberty.

03: Mary Ploppins, Magnets and Sorting Your Bits Out | Horrible Science

Mary Ploppins soothes those digestive ills, Dr Big Brain tries banana power, and Einstein reacts to T...

Rods, cones & 3D vision | James May's Things You Need to Know

James May asks the big questions about his body. Why are we made like this? In this clip, he explores cones, ro...

Light receptors | Inside the Human Body

There are two types of light receptors within the retina responsible for detecting and processing light: the rods and the cones.

How the body keeps warm in cold environments | Inside the Human Body

Using state-of-the-art graphics, Michael Mosley shows what happens in our bodies when we get cold.

How food and oxygen combine to provide energy to work the body | Inside the Human Body

Using state-of-the-art graphics, Michael Mosley explains what happens to food inside o...

Can I avoid bedtime? | The Ministry of Curious Stuff

Vic Reeves finds out if its possible not to sleep and why is it important.

What happens when you get a cold? | James May's Things You Need to Know

James May asks the big questions about his body. Why are we made like this? In this clip, he explains...

The role of T cells and antibodies when fighting an infection | Inside the Human Body

Using state-of-the-art graphics, Michael Mosley explains what happens when a virus ente...

An introduction to phagocytes | Inside the Human Body

Michael Mosley looks at how white blood cells, called phagocytes, fight bacteria inside our blood.

The process of healing a wound | Inside the Human Body

Using state-of-the-art graphics, Michael Mosley illustrates what happens inside the body in response to a wound or inj...

The life cycle of a red blood cell | Inside the Human Body

Using state-of-the-art graphics, Michael Mosley shows the journey of a red blood cell through the body.

07: Fartenheimer, the Water Cycle and 206 Bones | Horrible Science

Science goes too far in Fartenheimer, music goes too far in Heads, Shoulders, Knees, Toes and All the othe...

S01E04: You Could Turn Into a Giant? | Hey You, What If?

Find out why turning into a huge giant would be no fairy tale.

S03E15: Digestion | Brain Freeze

Knowles and McCork explore the digestive system of Colin the floor manager.

S03E14: Taste | Brain Freeze

Knowles and McCork ask 'Why do we make saliva while we eat?'

S03E13: Atoms | Brain Freeze

The crack TV science team investigate how many atoms there are in our bodies.

S03E05: Teeth | Brain Freeze

Knowles and McCork ask the question 'Why do we have baby teeth?'

S03E01E1: Blood | Brain Freeze

Knowles and McCork ask the question 'How does my heart keep beating?'

02: Solar System | Maddie, Space and You

Maddie takes us on a journey into space to explore planets, astronauts and rockets.

05: Astronaut Training! | Maddie, Space and You

Join Maddie as she finds out about the exciting things people do to train to become an astronaut. Maddie tries on a real spac...

01: Rockets | Maddie, Space and You

Join Maddie as she finds out how space rockets work and how they take astronauts into space. We discover how thrust and rocket fuel work ...

Seasons | Get Set Galactic

Learn about the seasons with a helpful graphic of the earths tilt and its orbit and hemispheres.

03: International Space Station | Maddie, Space and You

Join Maddie as she discovers that astronauts live in space on a spacecraft called the International Space Station. Th...

S08E14: The Earth Goes Round The Sun (Song) | Horrible Histories

The terrific astronomical trio of Copernicus, Isaac Newton and Galileo explain how they each came to their u...

S01E25: You Could Switch Off the Sun? | Hey You, What If?

See what would happen if you really could switch off the sun.

S01E14: You Could Live on the Moon? | Hey You, What If?

Some day people will live on the moon - find out just what they are in for.

S01E09: The Moon Was Made of Cheese? | Hey You, What If?

Things don't quite go to plan when the moon turns into cheese.

S01E02: You Could Dig Through the Earth? | Hey You, What If?

The deepest hole humankind ever dug only got one thousandth of the way through the earth. But what would happen ...

Do aliens live amongst us? | The Ministry of Curious Stuff

Vic Reeves looks through the history of alien sightings and their validity.

04: Space Robots | Maddie, Space and You

Join Maddie as she finds out how the robots astronauts use in space have helped us to create robots we use here on Earth. Maddie vis...

S01E26: You Could Fly Like a Bird? | Hey You, What If?

Anyone can fly like a bird - you just have to travel across the solar system to do it!

S01E21: You Woke Up as a Lizard Superhero? | Hey You, What If?

Why waking up with lizard powers would make you useless on earth but a superhero in space!

S01E20: You Try to Catch a Falling Star? | Hey You, What If?

What happens if you try to catch a falling star? Spoiler alert - probably best not to try!

S01E18: The Earth Was Shaped Like a Doughnut? | Hey You, What If?

Would it be possible to live on an Earth shaped like a doughnut? You might be surprised!

S01E16: You Could Actually Reach for the Stars? | Hey You, What If?

Want to reach for the stars? It would be the journey of a lifetime - literally.

S01E10: The Earth Was Flat? | Hey You, What If?

Find out why a flat Earth would feel very unflat indeed!

S01E08: The Earth Stopped Spinning? | Hey You, What If?

Find out why stopping the earth from spinning isn't such a good idea.

S01E05: You Could Go on Holiday to Mars? | Hey You, What If?

Experience the ultimate in long-distance travel - a holiday on Mars!

Thorny Devil | Deadly Top 10

Steve documents a scorching desert dwelling devil and how it adapts to its dry and hot surroundings.

Penguin chicks | Penguins: Meet the Family

Penguin chicks are extraordinarily adapted to survive in harsh environments.

Adaptation of the Arctic Fox | Life In The Snow

An exploration of how the artic fox's coat has adapted to survival in arctic winters.

Hibernation | Life In The Snow

How mammals have adapted to hibernate during the winter in freezing climates.

Adaptation of Polar Bear | Life In The Snow

An exploration of how polar bears have adapted to living in freezing conditions.

The Weddell seal's adaptations | Life

The Weddell seal is perfectly adapted to survive in the environment it must endure.

Hearing of an Arctic Fox | Life In The Snow

The Arctic Fox's sensitive hearing is crucial to the the process of tracking down prey.

Triumph of the Beasts | Walking with Beasts

The incredible story of how mammals took over from the dinosaurs as the largest, fastest and fiercest creatures on Earth.

05: Sabre Tooth | Walking with Beasts

This episode follows the progress of a Smilodon called Half Tooth. Smilodon was the largest of all the sabre tooth cats which roamed So...

03: Land of Giants | Walking with Beasts

25 million years ago in the Oligocene Epoch lived the Indricotheres. Weighing 15 tonnes and standing 7 metres tall, they were the la...

01: New Dawn | Walking with Beasts

The series following on from Walking with Dinosaurs. begins 49 million years ago. The world is heavily forested and birds rule the planet,...

Adaptation of the Reindeer | Life In The Snow

An exploration of how reindeer have adapted to living in freezing climates.

05: The World's Weather | Landmarks

A look at the huge variety of climates in the world and the methods that animals, plants and people use to survive in these extremes.

Magnificent harpy | Deadly 60

Steve Backshall gets a hard-won glimpse of the world's most powerful eagle.

The Beasts Within | Walking with Beasts

A look behind the scenes at the making of the series on prehistoric mammals. TV special effects show how Man's dextrous hands & expre...

06: Mammoth Journey | Walking with Beasts

Last in the series follows a herd of mammoths as they make their way south for winter, running a gauntlet of ice-age hunters includ...

04: Next of Kin | Walking with Beasts

We travel back 3 million years to Ethiopia, where Australopithecus, one of the first upright apes, lived in danger of being hunted by s...

02: Whale Killer | Walking with Beasts

36 million years ago mammals ruled the world. It is in the sea, however, that the most monstrous mammals can be found.

Can anything regenerate like Doctor Who? | The Ministry of Curious Stuff

Worms, if cut in half, can regenerate, survive and exist as two separate worms. So can starfish!

Can animals be superheroes? | The Ministry of Curious Stuff

Cockroaches, ants and wasps all get a mention due to their amazing superpowers including strength and mind control!

15: Forces and Motion Special | Horrible Science

A weird and wonderful look at how gravity, magnetism and friction impact everything. With Fred Sirieix.

01: Gravity the Musical, a T-rex and Vampires on Holiday | Horrible Science

A totally wicked song about gravity, a T-rex going to see a doctor, vampires on holiday, and Sir ...

Why Do Cats Have Nine Lives? | James May's Things You Need to Know

James May explains about speed, using a fast-moving mix of animation and graphics. Here he explores why te...

05: The Force Force, Lever Man and the Goldilocks Zone | Horrible Science

Meet superheroes the Force Force, and some of the 17th century’s greatest minds star in Friends par...

S03E11: Parachute | Brain Freeze

McCork and Ms Hucklebuck are in the sky as they ask 'How does a parachute work?'

S01E05: Aeroplanes | Brain Freeze

Knowles and McCork ask, how do aeroplanes fly?

Penguin chicks | Penguins: Meet the Family

Penguin chicks are extraordinarily adapted to survive in harsh environments.

Life In The Snow

Gordon Buchanan meets the animals who live in nature's winter wonderlands, from the polar bear mother helping her cubs to the owl searching for food.

Adaptation of the Arctic Fox | Life In The Snow

An exploration of how the artic fox's coat has adapted to survival in arctic winters.

Hibernation | Life In The Snow

How mammals have adapted to hibernate during the winter in freezing climates.

Adaptation of Polar Bear | Life In The Snow

An exploration of how polar bears have adapted to living in freezing conditions.

The Weddell seal's adaptations | Life

The Weddell seal is perfectly adapted to survive in the environment it must endure.

Hearing of an Arctic Fox | Life In The Snow

The Arctic Fox's sensitive hearing is crucial to the the process of tracking down prey.

Marine predators and scavengers | The Blue Planet

The scavengers of the deep ocean rely on predators at the surface to provide their nutrition.

Desert amphibians | Life in Cold Blood

Spadefoot toads can stay underground in a state of suspended animation for years, but when they emerge they must feed and breed before...

Shark oasis | The Blue Planet

David Attenborough explore the role of changeable deep ocean currents in creating an oasis for a variety of marine life.

Bowerbird steals a heart for his bower | Planet Earth II

This grey bowerbird has spent over a decade curating his collection of mostly man-made objects, designed to impress ...

Snow leopards mark their territory | Planet Earth II

Snow leopards live solitary lives, but remain well aware of the presence of their neighbours, because they leave message...

Fungi | Planet Earth

The high humidity of the rainforest creates the ideal environment for life built on decay.

Polar bears' habitat under threat from glacial melt | Planet Earth

David Attenborough discusses the effects on polar bears of melting Arctic ice caused by global warming.

A salt flat lizard searches for water | Mountain: Life at the Extreme

These lizards rely on flies as their source of food and water.

Flying spiders | Life in the Undergrowth

David Attenborough looks at gossamer threads made by baby money spiders. The spiderlings use this gossamer to travel by 'ballooning'.

Adaptation of the Reindeer | Life In The Snow

An exploration of how reindeer have adapted to living in freezing climates.

Lizard Heaters | Life in Cold Blood

Wall lizards take advantage of foul-smelling dead-horse arums.

Chameleon challenge | Life

While searching for a mate across the huge barren Namib desert, a female Namaqua chameleon seeks shade in the knowledge that tasty desert beetles ...

Magnificent harpy | Deadly 60

Steve Backshall gets a hard-won glimpse of the world's most powerful eagle.

04: Manky Materials and Shifty States Special | Horrible Science

Guy Mowbray narrates Elemental Gladiators, Judge Rinder has a science beef, and someone tries to steal the e...

Tsunami survival technology | Fierce Earth

Dougal tests out a innovative life-saving invention that mimics a lifeboat but as a plastic sphere and can withstand tonnes of pre...

S01E22: You Could Build a Gingerbread House? | Hey You, What If?

It's the ultimate baking challenge: making a gingerbread house you could actually live in.

S01E15: Everything You Touched Turned to Gold? | Hey You, What If?

What if you could turn things to gold? This episode shows that it might not work out that well.

S01E07: Clouds Were Made Out of Cotton Wool? | Hey You, What If?

Clouds might look like cotton wool, but if they really were, things would get very messy.

Heat and colour | Fierce Earth

Leo and Clare test wearing different colours in the heat to see how they affect their temperatures.

Firefighters uniform | Fierce Earth

Leo details how a firefighters uniform protects people from extreme heat.

S03E08: Ice | Brain Freeze

McCork and Hucklebuck attempt to break the record for the world's biggest ice cream cone.

S02E03: Boxes | Brain Freeze

Knowles and McCork ask 'What Is the Strongest Natural Material?'

S01E04: The Plants We Eat | Maddie, the Plants and You

Join Maddie as she finds out how many plants give us food we can eat and how we can help to look after them and our pl...

S01E01: The Flowers | Maddie, the Plants and You

Join Maddie on an adventure around the world of flowers to see how we can help to look after them and our planet.

S01E02: The Plants Around the World | Maddie, the Plants and You

Join Maddie on a journey of discovery to find out about plants around the world. Find out how we can help to...

S01E03: The Plants We Use | Maddie, the Plants and You

Join Maddie to discover the plants that we use in our everyday lives and how we can help to look after them and our pl...

Cunning Cacti | Life

This cacti deploys a variety of methods to maximise its chances of successful seed dispersal.

Species of tree | Planet Earth

In the New Guinea rainforest, different species of tree fight for sunlight.

S01E05: The Trees | Maddie, the Plants and You

Join Maddie on an adventure around the world of trees to see how we can help look after them and our planet. Discover how tree...

Searching for sunlight | Life

Different species of plants adopt a variety of ingenius techniques to secure much needed sunlight.

Flower power | Life

Flowers lure pollinators to ensure that plants can reproduce.

A resilient forest | Life

Two species of tree weather incredibly harsh conditions and seasonal change to ensure their survival.

S03E07: Plant Life | Brain Freeze

Knowles and McCork ask the impossible question 'How many plants are there in the world?'

S03E04: Space Food | Brain Freeze

Knowles and McCork ask the question 'Could pineapples grow on the moon?'

Stalactites and stalagmites | Planet Earth

How stalactites and stalagmites are formed in caves, from limestone dissolved in water droplets.

Lechuguilla Cave | Planet Earth

The walls of these caves are covered in fragile crystals made of gypsum, which is created when limestone is dissolved by sulphuric acid.

Limestone | Planet Earth

How limestone has been shaped over millions of years into a variety of different rock formations, including underground cave systems.

The Grand Canyon | Planet Earth

For five million years, the Colorado River has carved its way through the landscape, creating the Grand Canyon.

Sediment and plastic | How Earth Made Us

Professor Iain Stewart explains how sediment becomes rock and thus how plastic waste will impact future rock.