The complete works of one of history's greatest scientists, Charles Darwin, are being published online.
The project run by Cambridge University has digitised some 50,000 pages of text and 40,000 images of original publications - all of it searchable.
Surfers with MP3 players can even access downloadable audio files.
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Darwin Online features many newly transcribed or never-before-published manuscripts written by the great man.
These include a remarkable field notebook from his famous Beagle voyage to the Galapagos Islands, where detailed observations of the wildlife would later forge his scientific arguments.
