Why does the brain look like a giant walnut, how does it fit in enough wiring to stretch four times around the equator, and why could a magnet on the head stop someone mid-sentence?

The brain is constantly being bombarded with information, so how does it decide what to trust and what to ignore, without the person even being aware of it?

Have you ever seen a face in a piece of burnt toast, or given your car a name? Why do you feel pain when someone else is hurt? Why are people so obsessed with other people?

Series of lectures on a single topic, presenting scientific subjects to a general audience in an informative and entertaining manner

How can a hamster survive falling from the top of a skyscraper, ants carry over 100 times their own body weight and geckos climb across the ceiling?

Dr Mark Miodownik zooms into the microscopic world beneath our fingertips. In this unfamiliar landscape, strange forces dominate the world and common sense goes out of the window.

Why is the tallest building on earth less than half a mile high? Why don't we have mountains as tall as those on Mars?

Series of lectures on a single topic, presenting scientific subjects to a general audience in an informative and entertaining manner

There is a battle playing out inside your body right now. It started billions of years ago and it is still being fought in every one of us every minute of every day. It is the story of a viral infection - the battle for the cell.

Evolutionary biologist and master skeleton builder Ben Garrod presents a six-part series looking at how bones have enabled vertebrates to colonise and dominate practically every habitat on Earth.

Evolutionary biologist and master skeleton builder Ben Garrod begins a six-part journey to discover how bones have enabled vertebrates to colonise and dominate practically every habitat on Earth

Evolutionary biologist and master skeleton builder Ben Garrod discovers how the skeleton has adapted for vertebrates to move on land in a remarkable number of ways.

Ben Garrod finds out how the skeleton has allowed vertebrates to do the most remarkable thing of all - take to the air.

Ben Garrod delves into the surprising ways in which bone has evolved to help vertebrates sense the world around them. He reveals why predators like the wolf have eyes at the front of their skull whereas prey animals such as sheep usually have eye sockets on the side of their heads.

Ben Garrod uncovers the secrets of how vertebrates capture and devour their food using extreme jaws, bizarre teeth and specialized bony tools. He takes a cherry picker up a giant sperm whale's jaw, finds out which animal has teeth weighing five kilos each and which uses its skull as a suction pump.

Ben Garrod seeks out the big part that bones can play in reproduction. Through sexual selection, the skeleton has adapted to aid courtship, competition and even copulation.

A groundbreaking, global nature series with Chris Packham, Secrets of Our Living Planet showcases the incredible ecosystems that make life on Earth possible

Secrets of Our Living Planet showcases the incredible ecosystems that make life on Earth possible. Using beautifully shot scenes in the wild, Chris Packham reveals the hidden wonder of the creatures that we share the planet with, and the intricate, clever and bizarre connections between the species, without which life just could not survive.

Secrets of Our Living Planet showcases the incredible ecosystems that make life on Earth possible. Using beautifully shot scenes from all over the world, Chris reveals the hidden wonder of the creatures that we share the planet with, and the intricate, clever and bizarre connections between the species, without which life just could not survive.

Secrets of Our Living Planet showcases the incredible ecosystems that make life on Earth possible. Using beautifully shot scenes in the wild, Chris Packham reveals the hidden wonder of the creatures that we share the planet with, and the intricate, clever and bizarre connections between the species, without which life just could not survive

Secrets of Our Living Planet showcases the incredible ecosystems that make life on Earth possible. Using beautifully shot scenes in the wild, Chris Packham reveals the hidden wonder of the creatures that we share the planet with, and the intricate, clever and bizarre connections between the species, without which life just could not survive.

Sex is a simple word for a very complex set of desires. It cuts to the core of our passions, our wants, our emotions. But when it goes wrong, it can be the most painful thing of all. Professor Alice Roberts looks through 45 years of Horizon archive to see how science came to understand sex, strived to solve our problems with it, and even help us to do it better. Can science save the day when sex goes wrong?

David Attenborough investigates arguably the most important issue of the 21st century - the future of life on Earth

David Attenborough investigates arguably the most important issue of the 21st century - the future of life on Earth

David Attenborough investigates arguably the most important issue of the 21st century - the future of life on Earth

David Attenborough investigates arguably the most important issue of the 21st century - the future of life on Earth

Documentary which unravels the story of notorious performing whale Tilikum, who - unlike any orca in the wild - has taken the lives of several people while in captivity. So what exactly went wrong?

Professor Richard Fortey travels across the globe to find the survivors of mass extinction events

How some species survived the ice age that began 2.8 million years ago.

In episode two, Fortey focuses on the 'KT boundary'. 65 million years ago, a 10 km diameter asteroid collided with the Earth and saw the end of the long reign of the dinosaurs.