Who set a world land speed record of over 400 miles per hour at Bonneville, Utah, USA, and was killed attempting a new water speed record on Loch Ness in September 1952?
Why was the running of a record-breaking sub-two hour marathon (26.2. miles), in Vienna in October 2019 by an internationally well-known athlete, not recognised as an official world record?
The record at the 1976 Olympics set by Romanian gymnast Nadia Comăneci of scoring a perfect 10 for 7 routines, was equalled in the 1988 Olympics by a gymnast representing which country?
