High-dimensional spheres can have a much wider variety of structures than mathematicians thought possible. If you’ve ever been stuck in traffic on a rainy afternoon, you’ve probably watched raindrops ...

Most trigonometry students look at triangles on a flat surface. However, people from ancient astronomers to modern navigators calculated the arc lengths and angles of triangles on a sphere. They used ...

When it comes to good YouTube videos, I’m biased in favor of content made explicitly for the platform: media critiques, long-form investigations, and pointless tests of human endurance. “Outside In” ...