Professor Raúl Rojas has published a book about how symbols have been used throughout history in mathematics. The work was translated into English this year.

In any event, that’s exactly why we’ve gone ahead and put together this handy little list of must-know sex terms—from sex acts, to orientations, to kinks and fetishes, to positions, to sex slang. I ...

Tutorial showing how to create awesome, word cloud text portrait designs that are filled with custom text. You can use the ...