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About this site
The Worlds of David Darling is a large on-line collection of information on all aspects of science, technology, mathematics, philosophy, history, and science fiction. It has been developed, and is updated daily, by author and astronomer David Darling. It contains two major encyclopedias – the award-winning Encyclopedia of Science and the Encyclopedia of Alternative Energy and Sustainable Living. Material for these encyclopedia derives from the author's numerous books, submitted contributions from third parties, and public domain sources.
Other components of the site include an encyclopedia of history, and a children's encyclopedia of science.
The site first went online in 1999 and has now grown to more than 15,000 pages and approximately three million words.