If you're in tune with the metaphysical realm, you might already be familiar with angel numbers, aka a sequence of numbers believed to be divine messages from the universe. Maybe you noticed "777" on ...

A shard of smooth bone etched with irregular marks dating back 20,000 years puzzled archaeologists until they noticed something unique – the etchings, lines like tally marks, may have represented ...

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, ...