Over the last two years, the BBC's science strand Horizon has been behind the scenes at London's Natural History Museum, following the dramatic replacement of the iconic Dippy the Dinosaur skeleton cast with the real skeleton of a blue whale - the world's biggest animal.
Narrated by Sir David Attenborough, this special film follows the teams involved in what has to be one of the world's most unique engineering challenges.
Replacing Dippy is brave and bold - it is the first thing visitors see when they enter the grand Hintze Hall, but the Natural History Museum is changing, and the installation of the colossal blue whale skeleton is the start of a new chapter. The largest animal ever to have lived, blue whales were driven to the brink of extinction by hunting and were the first species humans decided to save, telling an inspiring story of hope for the natural world.
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s56e02 - Hair Care Secrets
s56e03 - ADHD and Me with Rory Bremner
s56e04 - Why Did I Go Mad?
s56e05 - Strange Signals From Outer Space!
s56e06 - Space Volcanoes
s56e07 - Antarctica - Ice Station Rescue
s56e08 - Cyber Attack - The Day the NHS Stopped
s56e09 - 10 Things You Need to Know About the Future
s56e10 - Dawn of the Driverless Car
s56e11 - Dippy and the Whale
s56e12 - What Makes a Psychopath?
s56e13 - Mars - A Traveller's Guide
s56e14 - Goodbye Cassini - Hello Saturn
s56e15 - Being Transgender
Horizon is BBC Two's flagship 50-minute science documentary series.
Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia.
In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand.
In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.
In September 2014 it celebrated its 50th anniversary and it continues to enjoy outstanding critical acclaim.