Speedy cheetahs put through paces

Scientists have begun a new study to shed light on what makes cheetahs the fastest land animal on the planet.The big cats can run nearly twice as fast as any other creature.The study is being carried out with captive North Africa cheetahs from ZSL Whipsnade Zoo - and it involves the help of some chicken and high speed cameras.Our science reporter Rebecca Morelle meets researcher Penny Hudson to find out more.

BBC | July 10, 2009

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