Top open problems (Trending topics)

The following are the current most viewed articles on Wikipedia within Wikipedia's Open problems category. Think of it as a What's Hot list for Open problems. More info »

This is a beta release and so the figures may be a day or two out of date. We'd love to get your thoughts.

Rank	Topic	Wikipedia views
1	Fermi paradox	3,489
2	Origin of water on Earth	523
3	Great Filter	513
4	Open problem	135
5	Unsolved problems	less than 5 views
6	Unsolved problems in biology	less than 5 views

Subcategories

Parent categories

Mysteries

Encyclopedia

Updated live from Wikipedia, last check: May 28, 2012 09:34 UTC (38 seconds ago)

From Wikipedia, the free encyclopedia

Unsolved problems: category for problems of a theoretical nature. See list of unsolved problems

Not for factual questions (e.g. Marie Celeste, etc): these belong in Category:Mysteries, or another of its subcategories, like Category:unsolved crimes.
Not for practical disputes (e.g. pollution, Middle East conflict). Perhaps try Category:Controversies or Category:Conflict.

Subcategories

This category has the following 9 subcategories, out of 9 total.

[+] Lists of unsolved problems (11 P)

C

[+] Uncracked codes and ciphers (2 C, 10 P)
[+] Unsolved problems in computer science (12 P)

E

[+] Economic puzzles (10 P)

L

[+] Unsolved problems in linguistics (3 C, 4 P)

M

[+] Unsolved problems in mathematics (3 C, 84 P)

N

[+] Unsolved problems in neuroscience (1 C, 18 P)

P

[+] Unsolved problems in physics (12 P)

U

[+] Unsolved problems in astronomy (4 P)

Pages in category "Open problems"

The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes (learn more).

Open problem

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List of unsolved problems

Categories: Mysteries