On a weekend in mid-May, a clandestine mathematical conclave convened. Thirty of the world’s most renowned mathematicians traveled to Berkeley, Calif., with some coming from as far away as the U.K.

Mathematician Jordan Ellenberg answers the internet's burning questions about geometry. How are new shapes still being discovered? Where are we using Pythagorean theorem in real life? How many holes ...

Mathematician Moon Duchin answers the internet's burning questions about mathematics. What actually is an algorithm? Is it possible to explain Pi (π) in words? Is geometric group theory just Anabelian ...