Horizon Season 50 Episodes

Episode 1

The Truth About Meteors

Professor Iain Stewart explains what meteorites and asteroids are, where they come from, the danger they pose and the role they have played in Earth's history.

Episode 2

The Creative Brain: How Insight Works

52 mins

Creativity defines our species - it lies behind our music and arts, and has allowed us to journey to beyond our own planet. For a long time, it was seen as gift of the gods, beyond scientific explanation. This film finds out what really happens in your brain before you have a great idea.

Episode 3

How to Avoid Mistakes in Surgery

Dr Kevin Fong finds out what surgeons can learn from other professionals who make life and death decisions under pressure.

Episode 4

The Truth About Taste

Horizon explores the latest scientific insights into the sense of taste, including the discovery of a way to make food taste sweeter without adding extra sugar.

Episode 5

The Age of Big Data

54 mins

Every day we produce more data than the human race did from the dawn of civilization until the year 2000. Twitter, search engines, - these colossal databases can be mined for valuable, sometimes mind-blowing, insights. Horizon unlocks the fascinating world of big data for you.

Episode 6

Tomorrow's World: A Horizon Special

Liz Bonnin delves in to the world of invention. From the new space race to a nanotech revolution, she reveals some of the technologies set to transform our lives.

Episode 7

The Secret Life of the Cat

With the aim of learning what cats get up to and where they go, 50 cats in one English village are fitted with GPS tracking collars that the scientists are later able to map with some surprising results.

Episode 8

Little Cat Diaries

A closer look at the cats who stood out in the experiment conducted in The Secret Life of the Cat, where 50 felines were fitted with GPS collars to track their every movement.

Episode 9

Fracking: The New Energy Rush

Iain Stewart investigates a new and controversial energy rush for the natural gas found deep underground. Getting it out of the ground involves hydraulic fracturing - or fracking.

Episode 10

Swallowed by a Black Hole

As a gas cloud strayed within the gravitational reach of a black hole at the centre of the Milky Way, it was hoped we would observe a feeding supermassive black hole in action.

Episode 11

What Makes Us Human?

54 mins

Professor Alice Roberts is making a new human being. She's five months pregnant. But as an anatomist, and doctor, Professor Roberts has a different perspective on her pregnancy than most mothers and she shares her scientific interest in the process with us in this special.

Episode 12

The Truth About Personality

Michael Mosley explores the latest theories on how our personalities are created - and whether they can be changed.

Episode 13

What's Killing Our Bees? A Horizon Special

Bees are worth £430 million to Britain's agriculture sector and a third of UK food is reliant on pollination, but their numbers have been falling dramatically.

Episode 14

Monitor Me

Dr. Kevin Fong tries to find out if humans get better health by using modern surveillance to control sleep, food intake and medical symptoms.

Episode 15

Defeating the Hackers

50 mins

Horizon meets the two men who uncovered Stuxnet, the pioneers of ultra-paranoid computing, a white-hat hacker who showed out how to hack into stand alone cash machines, and explains how companies test resilience.

Episode 16

Dinosaurs: The Hunt for Life

The documentary follows paleontologist so in ground breaking efforts to extract and analyze blood cells and soft tissue from fossilized dinosaur bones.

Episode 17

Sex: A Horizon Guide

Professor Alice Roberts looks through 50 years of 'Horizon' to see how science came to understand sex, strived to solve our problems with it, and even helps us to do it better. Can science save the day when sex goes wrong?

Episode 18

Impact! A Horizon Guide to Car Crashes

Dallas Campbell looks back over decades of Horizon and BBC archive to chart the key scientific breakthroughs that have transformed road safety and saved millions of lives.

Episode 19

Comet of the Century: A Horizon Special

Once hoped to be the most spectacular comet in a generation, Horizon examines the insights Comet ISON might bring to some of science's greatest mysteries.

Episode 21

The Final Frontier? A Horizon Guide to the Universe

Dallas Campbell looks back through almost 50 years of the Horizon archives to chart the scientific breakthroughs that have transformed our understanding of the universe.