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, ...
The bespectacled man with two pens in his shirt pocket and a black skullcap atop grey hair points to his computer screen and explains an epic project spanning generations. Gabriel Birnbaum, 66, is a ...
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