A small, lockable leather diary - kept in the vast archives of Cambridge University Library - has led to a reassessment of one of the key relationships in Charles Darwin's life.
An online recreation of Charles Darwin's famous experiment on the expression of emotion is being launched at Cambridge University's Festival of Ideas tomorrow (22nd).
The project mapping Charles Darwin's life and work in the 15,000 letters he wrote or received during his extraordinary lifetime will be completed after a £5 million funding package was announced.
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