Cambridge University has digitized Charles Darwin’s personal library and put online all his annotations and notes in the margin on Tuesday. The digitization also includes 330 of the most heavily annotated books already posted online for universal access.

People can now easily search for a keyword within Darwin's annotations, rather than trawl through hundreds of thousands of pages for his relevant thoughts, Techradar website reported. Darwin had over 1,480 books in his personal library, of which 730 have comprehensive notes scribbled in the margins. All the annotated books in his personal library will end up in the online database.

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