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 ...

Is there any credence to the “rule of three”? Experts tune in with their thoughts about math, pop culture and our impulse to find patterns in the chaos. What is the Celebrity 'Rule of 3'?

Is there any credence to the “rule of three”? Experts tune in with their thoughts about math, pop culture and our impulse to find patterns in the chaos. What is the Celebrity 'Rule of 3'? The ...