Higher dimensional spheres, or hyperspheres, are counter-intuitive and almost impossible to visualize. Mathematician Kelsey Houston-Edwards explains higher dimensional spheres and how recent revelations in sphere packing have exposed truths about 8 and 24 dimensions that we don't even understand in 4 dimensions.

Originally released by Knowledgemotion, 2016. Streaming video file encoded with permission for digital streaming by Infobase on February 21, 2020.