Lines of Thought: Discoveries that Changed the World

Stephen Hawking's draft type script of "A Brief History of Time" and Isaac Newton's annotated first edition of Principia Mathematica, arguably the most important scientific text ever are among the items on display at an exhibition marking 600 years of @Cambridge_Uni Library. Revolutionary ideas and how to share them are celebrated in "Lines of Thought via some of the word's most valuable books and manuscripts. But if the past 600 years has been rich in ideas, what should be preserved from this more ephemeral age? I found out for @BBCWorldatOne