What kind of tessellations can you make out of regular polygons? What shapes tessellate? If shapes can be combined to make patterns that repeat and cover the plane, then they tessellate. What patterns ...

What began with a focus on weather forecasting has evolved toward addressing errors in scientific modeling. In the collaborative environment of the Penn State Institute for Computational and Data ...

Here are two ambitious books by US journalists who cover China, and a lesser effort by Harvard academic Graham Allison that does not match its portentous billing, though it will receive plenty of ...