A bizarre "Rule of Four" has been identified in the basic structure of the majority of inorganic materials—and scientists are stumped as to why. The pattern is found in the so-called "unit cell" of ...

Peggy’s favorite classes in design school were about pattern rules. And that is what she shares with viewers in this episode. As Peggy says, “Pattern rules lead to Patterns Rule!” Fit 2 Stitch is ...