On their way up to Everest Base Camp on a quest to film jumping spiders, the Planet Earth II 'Mountains' team stumbled across a famous artefact in a remote monastery: the scalp of a yeti.

The yeti – a fantasy creature ... Tenzing Norgay (the first person to summit Mount Everest along with Sir Edmund Hillary) and even Alexander the Great. Sir David was asked in a 2013 interview ...