Dara O Briain hosts the ultimate test of cross-generational intelligence. In semi-finals week, the six remaining families battle it out to be crowned the winner. Show more
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In the second semi-final, two more of last week’s winning families return to the games lab and go head to head in the ultimate test of intelligence in a bid to make it through to the final. Show more
In the last semi-final, the competition reaches fever pitch. The fastest runners-up from the heats go head to head and need to push their brains to the limit in order to reach the final. Show more
In the grand final, the three sharpest families attempt the final super-charged challenges with ultimate levels of difficulty. Show more
Dara and the team shine a light on some of the mysterious and usually hidden worlds surrounding us, from our internal ecosystems to nanotechnology and more. Show more
Dara O Briain and his team of experts explore how much our brains give away about us and discover how illusions and machines can be used to manipulate the mind. Show more
Dara and the team reveal why size matters in science and how discoveries large and small are changing the way we view the universe, the economy and even our bodies. Show more
Dara O Briain and his team explore how powerful, affordable technology is ushering in a new era of DIY science that everyone can get involved in. Show more
Experts and a lively audience join Dara O Briain to tackle the biggest ideas in science from lots of different and unexpected angles. The team take a look inside the brain. Show more
Dara and the team of experts look to the future as they meet a robot with a sense of touch, investigate plans to mine the moon and peruse the fashions of tomorrow. Show more
Dara O Briain and his team go on a journey through time to discover what it is and how to get more of it. Alok Jha investigates the tiny margins of winning. Show more
It's finals week and the four remaining cooks continue to battle for the Celebrity MasterChef title. Will their ingredients, flavours and presentation be enough to impress? Show more
It's the MasterChef final. The remaining three celebrities must draw on everything they have learned in order to be crowned this year's champion. Show more
John Partridge, Spencer Matthews, Frankie Bridge, Jean Johansson and Anita Harris begin their campaigns to be crowned champion as the second heat week gets under way. Show more
The second heat continues with the four remaining celebrities facing three more challenges. Dev Griffin, Ulrika Jonsson and Angellica Bell return to help with the judging. Show more
Actor Chizzy Akudolu, England cricketer Monty Panesar, world champion Paralympian Stefanie Reid, comedian Zoe Lyons and TV star Gemma Collins compete in the third heat week. Show more
Former contestants Alexis Conran, Reverend Richard Coles and Andi Peters return to help with the judging as the final semi-final places are filled. Show more
In the first heat Keith Allen, Michelle Ackerley, Martin Bayfield, Josh Cuthbert and Carol Decker undertake three culinary challenges to impress John Torode and Gregg Wallace. Show more
After four weeks of intense competition it's the first of the semi-finals, and the best eight cooks remain. This episode kicks off with the celebrities' toughest challenge so far. Show more
It is the last of the semi-finals, and the remaining six celebrities compete for places in finals week, facing a pie challenge and a test featuing award-winning chef Paul Askew. Show more