In TV & Radiofollow-up:
BBC Two's flagship 50-minute science documentary series. This season marks its 40th anniversary.
Last shown: The Lost Civilisation of Peru The rise and fall of one of the greatest and most mysterious civilisations of the ancient world.
Are your senses overlapping? Is Monday red? Do musical melodies have colours? Take part in our experiments to see if your senses overlap. Do you see what I see? · Do you hear what I hear?
About Horizon Information about videos, UK repeats, international transmissions, contacts and a series history.
Message board Have your say on any of the subjects raised by the Horizon programmes.
Horizon pages archive Programme summaries, Q&As and transcripts from previous series of Horizon back to 1997.
The Lost Civilisation of Peru
Who's Afraid of Designer Babies?
An Experiment to Save the World
Neanderthal
Living with ADHD
Einstein's Equation of Life and Death
Einstein's Unfinished Symphony
Global Dimming
Dr Money and the Boy with No Penis
The Hunt for the Supertwister
Saturn - Lord of the Rings
Making Millions the Easy Way
What Really Killed the Dinosaurs?
Derek Tastes of Earwax
King Solomon's Tablet of Stone
The Truth about Vitamins
Our selection of the best pages from previous series. Homeopathy: The Test Freak Waves The England Patient Volcano Hell The Secret Treasures of Zeugma Dirty Bomb Death of the Iceman