Wow, those Bucky Balls are popular items. I received 2,787 emails. Not all of you had the right answer though. The question was: what type of magnets are Bucky Balls made of?
Some of you said carbon. But carbon is not a magnet, it's a chemical element. Some said fullerene, or buckminsterfullerene, or C60. But they are not magnets either, but a family of carbon allotropes, molecules composed entirely of carbon, in the form of a hollow sphere, ellipsoid, tube, or plane.
The right answer is: neodymium.
I numbered each email I received and then used a random number generator to decide who won. The winners are Jeffrey, Jennifer, and Mark. Winners have already received an email and a set of Bucky Balls will be send to them by Zoomdoggle.
Sorry if you didn't win and thanks for participating.
