At a recent show at the Moscone Center, supermodel Cheryl Tiegs could be seen on the exhibition floor, helping promote a product that she's passionate about. It wasn't a new line of cosmetics or a ...
Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback