Cities Are Quietly Altering One Of Nature’s Oldest Patterns

Biodiversity has always increased toward the equator. New research using birdwatcher data suggests urbanization is flattening ...

With 7 suits remaining, is the discard rate for both non-suits about 13%? Thinking about Mahjong probabilities using area diagrams

Hello. This is Hanabinabi.I've written a note for the first time in a while.This time, I calculated the probabilities ...