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Next on: Monday 06 July, 9PM on Channel 4
This four-part science series uncovers the anatomical secrets of some of the animal kingdom's most extraordinary species
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Next on: Monday 06 July, 4.25AM on Channel 4
Teams compete each week to construct a junk machine, using only what they can scavenge from the scrapheap. Every series builds to a final contest - and the crowning of a champion team.
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Next on: Saturday 11 July, 10.35PM on More4
The Great Sperm Race tells the story of human conception as it's never been told before. With 250 million competitors, it is the most extreme race on earth and there can only be one winner.
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Next on: Saturday 11 July, 7PM on Channel 4
Adventurer Bear Grylls takes on extreme survival challenges in some of the world's most hostile and unforgiving environments, from the deserts of Namibia to the skies over Mount Everest
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Last broadcast: Wednesday 01 July, 12.40AM on More4
Eco-campaigner Tracy Worcester investigates the intensive pig farming industry, arguing that it harms both human and environmental health
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Last broadcast: Wednesday 17 June, 12.45AM on More4
The True Stories presents George Carey's investigation into the mystery behind a massive explosion that shook Siberia in 1908. The epicentre, Tunguska, was so remote that no-one went in to investigate immediately.
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Last broadcast: Wednesday 10 June, 12.40AM on More4
True Stories presents Jennifer Baichwal's intriguing film which looks at the metaphysical effects of being struck by lightning
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Last broadcast: Thursday 28 May, 11.05PM on Channel 4
Starting on 25th May, for four consecutive nights, surgeons will carry out life-changing operations in front of a studio audience live on Channel 4, answering YOUR questions as they work
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Last broadcast: Wednesday 27 May, 1.55AM on More4
When builder Tommy McHugh and chiropractor Jon Sarkin suffered massive brain traumas, they suddenly revealed a previously hidden talent: to create art that amazed critics and collectors
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Last broadcast: Sunday 24 May, 3.40AM on Channel 4
Of all the species that have ever existed, 99.9% are now extinct. This documentary brings to life the compelling stories of these lost creatures and solves the mystery of their demise.
