The latest national and international news, exploring the day's events from a global perspective.
Dr Helen Czerski looks at the latest scientific insight into the aurora - dancing lights in the night sky that have fascinated cultures throughout our history. Show more
Quiz where players not only have to know the answer, they must find it in a hive of letters. Prime play Cruciverbalists for the Hive Minds series trophy.
Helen Czerski uncovers what colour is, how it works and how it has written the story of our planet. She seeks out the colours that turned the Earth multicoloured. Show more
Our five senses link us to the outside world. Dr Kevin Fong looks back through 40 years of Horizon archives to find out what science has taught us about our tools of perception. Show more
Famed for their ability to inflict Armageddon from outer space, asteroids are now revealing how they are responsible for both life and death on our planet. Show more
Nicola Benedetti introduces performances by celebrated violinists including Nathan Milstein, Mischa Elman, Isaac Stern, Yehudi Menuhin, Itzhak Perlman and Nigel Kennedy. Show more