Surgeon Gabriel Weston uncovers extraordinary cases that are bringing new discoveries about the human body. This week, we meet a girl whose heart has formed outside her ribcage. Show more

Going behind the headlines to answer health questions. Does caffeine really help us to stay alert and what are the alternatives? Ways to boost our brains are put to the test. Show more

Gabriel Weston looks at cases that were solved by examining the smallest traces of forensic evidence, and investigates the cutting-edge techniques being used today. Show more

Going behind the headlines to answer health questions. Dr Chris van Tulleken discovers how to make some favourite meals healthier without changing a single ingredient. Show more

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

Timothy Walker looks at how pioneer botanists unlocked the patterns found in different types of plants and opened the door to a new branch of science - plant genetics. Show more

Timothy Walker looks at how 17th century botanists made the connection between the growth of a plant and the energy from the sun - the process of photosynthesis. Show more

Going behind the headlines to answer health questions. Dr Chris van Tulleken investigates whether garlic, beetroot and watermelon can reduce blood pressure. Show more

The plain facts about our food. Alice Roberts investigates the claim that processed meat causes cancer and asks: how worried should we be about eating meat? Show more

The plain facts about our food. Alice Roberts finds out about the latest research which suggests that drinking artificially sweetened drinks can encourage us to eat more. Show more

Revealing the secrets of supermarket food. Does instant soup contain real tomatoes? How do you make sea salt? Plus Anton Du Beke and Jodie Prenger make orange squash. Show more

Stefan Gates reveals the secrets of supermarket food by making his own, explaining why coffee granules are frozen at the factory, and why peas must be frozen fast. Show more

The raw, early Earth had plenty of colour, but that canvas was about to be painted with a vast new palette - and the source of those colours was life. Show more

Helen Czerski looks at the colours invisible to our eyes. To see the universe in a new light, she takes to the skies in a jet equipped with an infrared telescope. Show more

Documentary series in which Dr Hannah Fry explores the mystery of maths. Is it invented like a language, or is it discovered and part of the fabric of the universe? Show more

Documentary series. Dr Hannah Fry explores a paradox at the heart of modern maths, and what maths reveals about the fundamental building blocks of the universe. Show more

Stefan Gates reveals the secrets of supermarket food by making his own. Stefan challenges John Torode and Lisa Faulkner to make rival 'wheaty breakfast bricks'. Show more

Topical programme which looks at what another extreme cold snap could mean for Britain's economy and examines the science of weather forecasting. Show more

The plain facts about our food. Alice Roberts investigates the food poisoning bug found on supermarket chicken. Show more

Documentary series. Dr Hannah Fry travels down the fastest zip wire in the world to learn more about Newton's ideas on gravity. Show more