(YouTube link) Vi Hart has a bone to pick with Nickelodeon, in that the show Spongebob Squarepants does not represent the world the way it really is to children. Does she complain about the talking kitchen sponge who...

The Fibonacci sequence, named after a 13th Century Italian math...  ...h Century Italian mathematician, is a sequence of numbers in which every third number is the sum of the pre...  ...every third number is the sum of the previous two numbers . This ring and others like it...