More factoids

From tonight's The Museum of Curiosity (one of the few Radio 4 6.30pm comedies worth listening to), three factoids:

• Elvis Presley loved 'Monty Python and the Holy Grail' & could recite much of it by heart.
• There are somewhere between 14 to 18 intact abandoned Tube stations beneath London.
• A recent survey found that only 15% of university graduates know what bonobos are.