If You Are Not Aware. . . .
Of Wolframalpha, you should be. A research engine of apparently enormous power. A list of research topics by example includes: mathematics, dates & time, statistical analysis, physics, chemistry, astronomy, engineering, life science, earth science, culture & media, people & history, word & linguistics. Better yet, for those of you who can use it--it's available as a $2.00 iPhone or iPad app. A lot of the information is along the lines of what is available in a dictionary or numerical table--but still a nice first place to go. Go, enjoy. (Try entering your birthdate)