The Best Episodes Directed By Naomi Austin

The story of water's miraculous arrival onto our planet and its pivotal role in the survival — and amusement — of a herd of elephants.

Shaping our entire universe, gravity has set the stage for life. For two king penguins, it steered them toward their soulmates.

Imagine a world where dinosaurs still walk the earth. A world where the Germans won World War II and you are President of the United States. Imagine a world where the laws of physics no longer apply and where infinite copies of you are playing out every storyline of your life. It sounds like a plot stolen straight from Hollywood, but far from it. This is the multiverse Until very recently the whole idea of the multiverse was dismissed as a fantasy, but now this strangest of ideas is at the cutting edge of science.And for a growing number of scientists, the multiverse is the only way we will ever truly make sense of the world we are in. Horizon asks the question: Do multiple universes exist? And if so, which one are we actually in?

In the second part of his four-part series, historian David Olusoga explores the business of slavery and remembers the black sailors who fought for Britain at Trafalgar. He also celebrates a Georgian boxing superstar and the men and women who crossed continents in pursuit of freedom.

In part three of this groundbreaking series, historian David Olusoga explores the Victorian moral crusade against slavery. He finds out how Queen Victoria came to have a black god-daughter, why the mill workers of Rochdale stood in solidarity with enslaved Africans in the American South, and remembers the victims of a tragedy in Jamaica.

Where did humans come from, and what makes us unique? Discover the remarkable origins of Homo sapiens, and the crucial moments of innovation, communication, and ritual that set us on our path.