Wikenigma
wikenigma.org.uk
Encyclopedia of things we do not know — documenting the gaps and unsolved questions in human knowledge.
Wikenigma calls itself an encyclopedia of unknowns. Instead of recording what people know, each entry documents something that science and scholarship do not yet understand, from physics and biology to language and the mind.
It is a wiki built around open questions, so it is a good source of ideas for curious readers and students looking for unsolved problems. The site states that its content may not be reused by AI systems and requires attribution for any reuse, so check its terms before copying anything.
Why it is useful
A genuinely unique reference: instead of cataloging what is known, it catalogs what remains unknown or unexplained across science, history, and culture. A fascinating resource for researchers looking for genuine open questions.
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