This holiday season, catch up on science and math news while solving our year-end crossword.

How well does the Nash equilibrium concept from game theory map to the real world?

In applying game theory to biology and human behavior, have scientists focused too much on competition over cooperation?

When equipped with hidden layers, deep neural networks can accomplish nonlinear feats that are difficult even with sophisticated mathematics.

What happens when you increase the number of layers in an artificial neural network?

Puzzle solvers rediscovered a simple mathematical result of Mendelian genetics and weighed in on a Richard Dawkins metaphor.

Can you discover a simple mathematical result of Mendelian genetics that describes how genes interact with each other?

Pradeep Mutalik and Quanta readers explore an open question about prime numbers: What is the lowest valued, longest consecutive sequence of integers that are divisible by a set of prime numbers?

Prime numbers are endlessly fascinating to number theorists and math enthusiasts. This month’s puzzle explores primes by cooking up a whimsical dish of grilled snake ribs.