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59 minutes
First broadcast: on BBC One WestLatest broadcast: on BBC Two Northern Ireland HD
Richard Hammond explores the miniature universe around us, from microscopic changes to ice crystals that can trigger avalanches to watching the aftermath of a sneeze. Show more
Using state-of-the-art technologies, Richard Hammond goes beyond the limits of the naked eye and explores the hidden secrets of the invisible world around us. Show more
Dr Kevin Fong learns how we can survive in hostile conditions. In the second programme he goes goes climbing in the Alps to find out how the body responds to altitude. Show more
Documentary following a team of underwater archaeologists and experts as they use CGI to reveal the secrets of Pavlopetri in Greece, the world's oldest submerged city. Show more
1 hour
Following a group of British amateur engineers who descend upon Bonneville, Utah with their vehicles, all hoping to join an elite group: the fastest men on earth. Show more
This follows the men and their machines for a week of land speed racing on the Bonneville salt flats. Who has what it takes to get a Bonneville record? Show more
Documentary telling the behind-the-scenes story of Felix Baumgartner's historic, record-breaking 128,100ft freefall from the edge of space to Earth on 15 October 2012. Show more
1 hour
Five adventurers take on deadly creatures in the planet's most hostile places. High in the Ecuadorian Andes they join the local cowboys and battle with fighting bulls. Show more
Charity appeal. BBC Security Correspondent Frank Gardner, who was shot six times at close range while on assignment in Saudi Arabia in 2004, appeals on behalf of Back Up. Show more
Ben Fogle appeals on behalf of Hearing Dogs for Deaf People, a charity providing specially trained dogs to alert deaf people to danger signals. Show more
Gareth Gates makes an appeal on behalf of the British Stammering Association, the charity that offers support to people affected by stammering. Show more
Strictly Come Dancing judge Craig Revel Horwood makes an appeal on behalf of the National Osteoporosis Society. Show more
Actor Dominic West appeals on behalf of The Sick Children's Trust, a charity that provides free accommodation for families with seriously ill children. Show more
Cold Feet and Spooks actress Hermione Norris travels to rural Malawi to make an emotional appeal on behalf of EveryChild, an international development charity. Show more
Theo Paphitis makes an appeal on behalf of bibic (the British Institute for Brain Injured Children), a charity that helps children with a range of developmental problems. Show more
One Show presenter Carrie Grant makes an appeal for Research Autism, a charity dedicated to improving the quality of life and outlook for people affected by autism. Show more
Doctor Kevin Fong learns how we can survive in hostile conditions. He investigates how our bodies react underwater, and how technology lets us survive the ocean depths. Show more
59 minutes
First broadcast: on BBC HDLatest broadcast: on BBC Two Northern Ireland
Using state-of-the-art technologies, Richard Hammond goes beyond the limits of the naked eye and explores the hidden secrets of the invisible world around us. Show more
59 minutes
First broadcast: on BBC HDLatest broadcast: on BBC Two Northern Ireland
Richard Hammond uses groundbreaking imaging technology to take the viewer on a journey of discovery beyond the visible spectrum, seeing the world in a whole new light. Show more
1 hour
The lads' penultimate challenge could be the most deadly, as they come to Bangladesh to learn to catch venomous snakes under the aegis of snake king Shoporaj Dholu. Show more
