• Animals and Plants
  • Animal Planet - Includes pet guides 
  • Field Guides - By the National Wildlife Federation

• Converters & Calculators
  • Calendar Converter - Gregorian, Julian, etc. 
  • Convert It - Easily convert temperature, measures, weights
  • Mega Converter - Lots of conversion tools; Click "Megacalculator" for a nifty on-line calculator. 
  • Universal Currency Converter and World Currency Symbols & Fonts 

• Dictionary, Encyclopedia, Thesaurus, Atlas
  • Acronym Finder - "Find out what any acronym, abbreviation, or initialism stands for."
  • Encyclopedia Britannica 
  • Info Please - "All the knowledge you need."
  • Merriam-Webster 
  • One-Look Dictionary Search - Search all on-line dictionaries or pick your favorite. 

• Farmers Almanac - Astronomy, weather, gardening, food

• Grammar & Punctuation
  • Blue Book of Grammar and Punctuation - English Rules 
  • Guide to Grammar and Writing 

• Language Translators
  • Babel Fish 
  • Free Translation 

• Math
  • Math Goodies - Interactive Math lessons 
  • Math Basic Helps and Contest Books/Samples by Math League 
  • Math for Morons - Geometry, Pre-Algebra, Algebra, Algebra II, Pre-Calc/Calculus 
  • Mega Mathematics - By Los Alamos National Laboratory 
  • Purple Math - Algebra 
  • SOS Math - Algebra, Trig, Calculus, Differential Equations 

• Melissa Data - Addresses, Area Codes, Climate Averages, Demographics, Nearest Post Offices, Income Tax Statistics, Public Schools, SIC Codes, Home Sales and Average Selling Price, and more

• Science
  • ChemiCool - Periodic Table of the Elements 
  • ChemFinder - Find out about chemicals, elements
  • New Scientist - Everyday scientific phenomena 
  • Earth & Sky Star Pronunciation Guide - Includes constellations

• Time & Population Clocks
  • Official U.S. Time 
  • World Time Zones Map and U.S. Naval Observatory, Astronomical Applications
  • World Time Server 
  • U.S. & World Population Clocks 

• Misc.
  • Drink Wheel - Estimate your blood-alcohol level "Don't Drink & Drive" 
  • eHow - "How to do just about everything!" 
  • How Stuff Works 

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