Two distinct extremist groups, ISIS and the Boogaloo movement, would seem at first glance to share little in common other than a willingness to commit violence. Yet these groups emerge and grow online ...

This weekend, the Franklin Institute opens its summer exhibition about mathematical patterns that recur in nature. Its centerpiece is a 1,700-square-foot maze of mirrors, set in a grid of equilateral ...

Frank A. Farris does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Remember the graph paper you used at school, the kind that’s covered with tiny squares? It’s the perfect illustration of what mathematicians call a “periodic tiling of space”, with shapes covering an ...