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. Show more

Series exploring scientific issues. Following the search for the smallest thing in the universe, a journey where things don't just become smaller - but also a whole lot weirder. Show more

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

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. Show more

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. Show more

Series exploring scientific issues. Plastic surgeon Dr Rozina Ali finds out whether it is possible to make your skin look younger without surgery, exploring the latest research. Show more

Professor Alice Roberts investigates what exactly makes human beings different from the animal kingdom. What is it that truly makes us human? 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 scientific issues. This episode follows the cosmologists who are creating the most ambitious map in history - a map of everything in existence. Show more

Horizon tests the limits of the data revolution, crime prediction in LA, financial formulas in the city of London and a South African attempt to catalogue the entire cosmos. Show more

Series exploring scientific issues. Meeting the scientists who are tracking the emergence of 'superbugs' - dangerous bacteria resistant to antibiotics - around the world. Show more

The programme goes behind the scenes at Nasa as the countdown commences to the landing of a billion-dollar nuclear-powered rover on the surface of Mars. Show more

Series exploring topical scientific issues. This edition looks at how scientists are using some unusual techniques to understand how moments of creativity come about. Show more

Topical science series. Iain Stewart investigates a controversial energy rush for the natural gas found deep underground, sometimes right under the places people live in. Show more

Series exploring topical scientific issues. Michael Mosley explores the latest theories on how our personalities are created - and whether they can be changed. Show more

Michael Mosley examines the science behind fasting, as he sets himself the ambitious goal of living longer, staying younger and losing weight without changing his lifestyle. Show more