By The Times Mind Games
By Time Out
By Joseph Acton Morris
By D.C. Money
By Jennifer Trainer Thompson
By Jacki Pan-Passmore
By Bernadine Lawrence, Maurice Hanssen, Derek Cooper
By Good Housekeeping Institute
By Jennifer Stone
By Natural History Museum
By The Puzzle Society
By Greer, Brian
By Jean Pratt, Geoff Pratt
By Jarvis, Lee
By John Woodforde
By Dennis Hardley
By Mary Considine
By Sir David Attenborough
By Bill Watterson
By Trust National
By Annie Ashworth, Katherine Lapworth, Alexandra Fraser
By Rosemarie Jarski
By Cameron, Sarah