Documentary. Episode three reveals how crawling transforms our understanding of the world, when our memory first develops and how we learn to talk. Show more

Documentary. Episode two looks at why we are born to respond to faces, what makes babies laugh and how we learn to empathise with others. Show more

Documentary. This episode explores how changes in the first two years of life make us individuals, how tablet use affects our babies and where our biases come from. Show more

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. Show more

Horizon discovers what your cat really gets up to as 50 cats from a village in Surrey are tagged with GPS collars and their every movement is recorded. Show more

Series exploring topical scientific issues. Professor Uta Frith shows how another kind of reality exists for people with autism and if many of us could be a little bit autistic. Show more

Professor Robert Winston and professor Tanya Byron discover how teenagers' changing brains means that what they choose to do at 16 can shape their lives forever. Show more

Liz Bonnin and a team of experts conduct a groundbreaking scientific study of cats. They reveal the secret language of cats and why they meow to us but not each other. Show more

Quirky film in which Michael Mosley sets out to find what intelligence is, and where it comes from. He also tries to boost his brain power in an attempt to pass the Mensa test. Show more

Quirky film in which Michael Mosley sets out to find what intelligence is, and where it comes from. He also tries to boost his brain power in an attempt to pass the Mensa test. Show more

Six female celebrities spanning different age ranges, backgrounds and experiences come together in Leeds to tackle some of the most hotly contested issues facing women today. Show more

The singer Jamelia is a single mum, but it's not something she's proud of. She explores where the sense of shame comes from by looking at stories of single mums from the past. Show more

Series exploring topical scientific issues. Marcus Du Sautoy asks how close mankind is to creating computers or robots that can think for themselves - artificial intelligence, AI. Show more

In April 1945, most of Germany is occupied by invading Allied forces. As the Soviets near Hitler's hiding place, the Nazi regime starts to disintegrate. Show more

The story of how we're made. Michael Mosley looks at our middle weeks in the womb - when we become an individual. Produced in partnership with The Open University. Show more

In the immediate aftermath of World War II, as the Allies uncover the scale of the Holocaust, the hunt is on to capture and convict the highest-ranking Nazis. Show more

As the Cold War escalates, most Nazi hunting is abandoned. Suddenly, Nazis are able to return to normal life or find refuge overseas. Thousands begin new lives in South America. Show more

In the 1960s and 70s, World War II is a distant memory, but a few diehards are determined to hunt down thousands of Nazi war criminals, some of whom are living in plain sight. Show more

Germany is losing the war, but Hitler refuses surrender. Instead, he pursues a policy of total war, which plays out as a psychological drama within his inner circle. Show more

At the end of March 1945, Nazi Germany is on the brink of collapse, and with Berlin under daily bombardment, Hitler has permanently retreated to his bunker. Show more