• Everyday Mysteries
  Fun Science Facts from the Library of Congress
  Did you ever wonder why a camel has a hump? If you can really tell the weather by listening to the chirp of a cricket? Or why our joints make popping sounds? These questions deal with everyday phenomena that we often take for granted, but each can be explained scientifically
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• Facts On File News Services: Welcome!
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• Hooked on Facts.com
  A Huge Collection of Interesting Facts, Useless Facts, and Weird Facts!
  Thousands of the most Interesting Facts, Useless Facts, and Amazing Facts ever Uncovered!
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• Refdesk
  Reference, facts, news, free and family friendly
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• Veegle
  Substaniated True Facts - The Real Odds
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