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, ...

Time has evaded us all at one point or another. You might have overestimated how long dinner would take to cook, realized you’d planned to return a phone call hours ago or found yourself heading out ...

Adrian Bardon 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 ...