and this class of magnetic material that has remained elusive up until now turns out to be this missing link in the puzzle." Editor's Note: This story was updated on Friday, Jan. 24 at 10:05 a.m ...

This September, children should be ready to gear up for a unique mathematical challenge. Brains will buzz, fractions and percentages will flow thick and fast. Brinda Majithia Updated : Nov 19, 2013, ...

No, because it’s impossible. Venn himself discovered this and came up with a clever fix, but this only begot deeper geometric puzzles that mathematicians still study today. If you're enjoying ...