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Get facts about anything from these compilations of human knowledge

Wikipedia
Encyclopedia of human knowledge written collaboratively by contributors around the world

e.g.: cell nucleus
Related:
1. Best
2. Biography
3. Dictionary
4. Education
5. Encyclopedia
6. General
7. Geography
8. Information
9. Knowledge
10. Map
11. Person
12. Reference
13. Research
14. Search
15. Wiki
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Encyclopædia Britannica
Search through over 70,000 articles of the Encyclopædia Britannica

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e.g.: origin of universe
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About Topic Guides
Search through the About directory of over 50,000 specialized topics, each one managed by an expert on the subject

e.g.: Book Reviews
Related:
1. About
2. Directory
3. Encyclopedia
4. Howto
5. Info
6. Information
7. Portal
8. Reference
9. Research
10. Search
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Wolfram|Alpha
Enter a question or calculation and Wolfram|Alpha uses its built-in algorithms and data to get the answer. A huge set of information and tons of models, methods, and algorithms that make it possible to compute whatever can be computed about anything

Question, calculation, date, place, stocks, food

e.g.: weather san diego vs syndey or Apple Google or $250 + 15% or 9 strawberries or 100 km/h
Related:
1. algebra
2. algorithm
3. analysis
4. areacode
5. barcodes
6. calculate
7. calculation
8. charts
9. City
10. color
11. Compare
12. Convert
13. countries
14. data
15. dates
16. Dictionary
17. Distance
18. Education
19. equivalent
20. facts
21. Finance
22. formula
23. geneology
24. Geography
25. graphs
26. Historical
27. History
28. holidays
29. homework
30. Information
31. interest
32. IP
33. Knowledge
34. length
35. Locations
36. Lookup
37. Map
38. materials
39. math
40. measure
41. Money
42. mortgage
43. music
44. Person
45. physics
46. place
47. Postalcode
48. question
49. Reference
50. Research
51. science
52. Search
53. speed
54. sports
55. Statistics
56. stocks
57. temperature
58. Thesaurus
59. tides
60. time
61. timezones
62. transportation
63. unicode
64. units
65. weather
66. Web
67. weight
68. Zipcode
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Columbia Encyclopedia
Search through over 51,000 entries of the Sixth Edition of the Columbia Encyclopedia

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e.g.: origin of universe
Related:
1. Encyclopedia
2. English
3. Information
4. Library
5. Reference
6. Research
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whatis.com IT Encyclopedia
Get definitions for Internet, hardware, software or networking-related terminology

e.g.: semantic
Related:
1. Computer
2. Computers
3. Dictionary
4. Encyclopedia
5. Reference
6. Technology
7. Terminology
8. Terms
9. Tools
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