Back up to: Horizon
12/12 Physicist Dr Helen Czerski and meteorologist John Hammond make sense of Britain's weather.
11/12 Horizon tells the inside story of the search for Malaysia Airlines flight MH370.
10/12 Professor Uta Frith shares the insight of her lifetime's study of autism.
9/12 Horizon uncovers the truth about how you really make decisions.
8/12 Investigating how placebos work, and how we could all benefit from their hidden power.
7/12 Horizon goes behind the scenes at Nasa to discover how it is preparing a mission to Mars.
6/12 Investigating why the geology of Florida makes it the sinkhole capital of the world.
5/12 What's worse for us: sugar or fat? Doctors Chris and Xand Van Tulleken investigate.
4/12 Meeting a scientist who may have found signs of dinosaur DNA within their ancient remains.
3/12 Exploring the murky world of hackers and the scientists joining forces to help defeat them
2/12 Horizon explores the boom in health-related apps and gadgets.
Bill Turnbull meets the scientists trying to solve the mystery of what is killing bees.