The equations that govern black holes were true before there were black holes. That claim is hotly contested, and cuts through one of the deepest fault lines in the philosophy of mathematics. On one ...

This is episode two of a three-part series. You can listen to part one here and part three here. [CLIP: Theme music] Rachel Feltman: Ever wondered what math actually is? No? Well, mathematicians sure ...

Thomas Mulligan explores the philosophical debate over whether mathematics is a human invention or an inherent discovery embedded within the natural laws of the universe. US conducts self-defense ...