S3E1:Impossible Feats

2 Feb 201522 minTV-G

It is said that fleas can jump the equivalent of humans leaping over St Paul's Cathedral and it is famously claimed that cheetahs can run at speeds of 70 miles per hour. But are these incredible suppositions really true? In this remarkable natural history documentary, David Attenborough asks if these animals can really achieve what should be physically impossible, and sorts fact from fiction.